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JFC 구성 및 일반 클래스 활용1

추상작업 2020. 9. 18. 14:29

Swing을 이용한 화면 구성

AWT(Abstract Window Toolkit) JFC(Java Foundation Class Library) (Swing)
플랫폼에 종속적인 컴포넌트 : 현재 시스템에 종속적으로 프래임 모형을 구축한다. 플랫폼에 독립적인 컴포넌트 : 자바로 만들어져 시스템에 독립적으로 프레임 모형을 구축할 수 있다.
중량의 컴포넌트 : 시스템 자원을 끌어와 사용하기 때문이다. 경량의 컴포넌트 : 자바로 구현된 소스를 이용하기 때문이다.
단일 프레임 : 컴포넌트를 표시하는 패널이 하나만 존재한다. 다중 프레임 : 컴포넌트가 적재되는 패널이 계층별로 여러개 존재한다.
사용 패키지 영역 : java.awt 등이 있다. 사용 패키지 영역 : java.awt, javax.swing, javax.swing.border, javax.swing.table, javax.swing.tree 등이 있다.

 

JFC는 다중패널로 구성된다.

출처: docs.oracle.com

 

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex01_Sub extends JFrame {
    private Container con;
    private ImageIcon im;
    
    public Round22_Ex01_Sub() {
        super("제목");
        this.init();
        this.start();
        im = new ImageIcon("title.gif");
        this.setIconImage(im.getImage());
        this.setSize(300, 200);
        Toolkit tk = Toolkit.getDefaultToolkit();
        Dimension di = tk.getScreenSize();
        Dimension di1 = this.getSize();
        this.setLocation(
            (int)(di.getWidth()/2 - di1.getWidth()/2)
            , (int)(di.getHeight()/2 - di1.getHeight()/2)
        );
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane(); // 다중 Pane에서의 기본 작업영역 획득
        // 폼 구성영역
    }
    
    public void start() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        // Frame의 X버튼을 눌렀을 때의 Event (WindowEvent Closing)
    }
}

public class Round22_Ex01 {
    public static void main(String[] args) { 
        new Round22_Ex01_Sub();
    }
}

JFC Component 클래스

각 컴포넌트에 이미지를 추가 할 수 있는 예제

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex02_Sub extends JFrame {
    private Container con;
    private JButton j1 = new JButton("Test");
    private ImageIcon im, im1;
    
    public Round22_Ex02_Sub() {
        super("Test");
        this.init();
        this.start();
        
        this.setIconImage(im.getImage());
        this.setSize(300, 200);
        Toolkit tk = Toolkit.getDefaultToolkit();
        Dimension di = tk.getScreenSize();
        Dimension di1 = this.getSize();
        this.setLocation(
            (int)(di.getWidth()/2 - di1.getWidth()/2)
            , (int)(di.getHeight()/2 - di1.getHeight()/2)
        );
        this.setVisible(true);
    }
    
    public void init() {
        im = new ImageIcon("title.gif");
        im1 = new ImageIcon("title.gif");
        con = this.getContentPane(); // 기본 작업영역 획득
        con.setLayout(new BorderLayout()); // 작업영역에 Layout 설정
        con.add("North",j1);
        con.add("Center", new JButton("Test1", im1));
    }
    
    public void start() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    
    public void paint() {
    
    }
}

public class Round22_Ex02 {
    public static void main(String[] args) { 
        new Round22_Ex02_Sub();
    }
}

 

툴팁 예제

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex03_Sub extends JFrame {
    private Container con;
    private JButton jb = new JButton("Test");
    private JButton jb1 = new JButton("Test1");
    
    
    public Round22_Ex03_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane(); // 기본 작업영역 획득
        con.setLayout(new BorderLayout()); // con.setLayout(new FlowLayout());
        jb.reshape(50, 50, 100, 100);   // jb.setBounds(50, 50, 100, 100);
        jb.setBackground(Color.yellow);
        jb.setEnabled(true);
        jb.setForeground(Color.black);
        jb.setFont(new Font("굴림체", Font.BOLD, 20));
        jb.setOpaque(false);  //투명성 속성값을 사용하여 표시한다.
        jb.setToolTipText("하하하");
        con.add("Center",jb);
        jb1.setToolTipText("호호호");
        con.add("North",jb1);
        jb.updateUI(); //combobox, list
        
    }
    public void start() {
        
    }
    
    public void paint() {
    
    }
}

public class Round22_Ex03 {
    public static void main(String[] args) { 
        new Round22_Ex03_Sub();
    }
}

 

이벤트 관련 메서드 지원

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex04_Sub extends JFrame implements MouseListener {
    private Container con;
    private FlowLayout fl = new FlowLayout();
    private JButton jb = new JButton("Test");
    private ImageIcon im = new ImageIcon("aa.gif");
    private JButton jb1 = new JButton(im);
    private JButton jb2 = new JButton("Str & Icon",im);
    private ImageIcon im1 = new ImageIcon("bb.gif");
    private ImageIcon im2 = new ImageIcon("cc.gif");
    
    public Round22_Ex04_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(fl);
        jb.setEnabled(true);
        con.add(jb);
        jb1.setMnemonic('a'); //alt + a (단축키 지정 Method)
        con.add(jb1);
        jb2.setHorizontalTextPosition(SwingConstants.RIGHT);
        jb2.setVerticalTextPosition(SwingConstants.TOP);
        
        jb2.setMnemonic('b'); //alt + b (단축키 지정 Method)
        jb2.setPressedIcon(im1);
        jb2.setRolloverIcon(im2);
        con.add(jb2);
    }
    public void start() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jb.addMouseListener(this);
    }
    
    public void mouseClicked(MouseEvent e) {
        if( e.getSource() == jb ) {
            jb.doClick(5000);
        }
    }
    public void mousePressed(MouseEvent e) { }
    public void mouseReleased(MouseEvent e) { }
    public void mouseEntered(MouseEvent e) { }
    public void mouseExited(MouseEvent e) { }
}

public class Round22_Ex04 {
    public static void main(String[] args) { 
        new Round22_Ex04_Sub();
    }
}

 

토클을 지원하는 버튼

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex05_Sub extends JFrame {
    private Container con;
    private GridLayout gl = new GridLayout(2, 2, 5, 5);
    private JToggleButton tb = new JToggleButton("1", true);
    private JToggleButton tb1 = new JToggleButton("2", false);
    private JToggleButton tb2 = new JToggleButton("3", false);
    private JToggleButton tb3 = new JToggleButton("4", false);
    private ButtonGroup bg = new ButtonGroup();
    
    public Round22_Ex05_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(gl);
        bg.add(tb);
        bg.add(tb1);
        bg.add(tb2);
        bg.add(tb3); 
        con.add(tb);
        con.add(tb1);
        con.add(tb2);
        con.add(tb3);         
    }
    public void start() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

public class Round22_Ex05 {
    public static void main(String[] args) { 
        new Round22_Ex05_Sub();
    }
}

 

RadioButton 예제

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex06_Sub extends JFrame {
    private Container con;
    private GridLayout gl = new GridLayout(2, 2, 5, 5);
    private JRadioButton cb1 = new JRadioButton("1", true);
    private JRadioButton cb2 = new JRadioButton("2");
    private JRadioButton cb3 = new JRadioButton("3");
    private JRadioButton cb4 = new JRadioButton("4", true);
    private ButtonGroup bg = new ButtonGroup();
    private ButtonGroup bg1 = new ButtonGroup();
    
    public Round22_Ex06_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(gl);
        bg.add(cb1);
        bg.add(cb2);
        bg1.add(cb3);
        bg1.add(cb4); 
        con.add(cb1);
        con.add(cb2);
        con.add(cb3);
        con.add(cb4);         
    }
    public void start() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

public class Round22_Ex06 {
    public static void main(String[] args) { 
        new Round22_Ex06_Sub();
    }
}

 

Border

  • Empty, Line, Etched, Bevel, SoftBebel, Matte, Titled, Compound
import java.awt.*;
import java.awt.swing.*;

class Round22_Ex07_Sub extends JFrame {
    private Container con;
    private FlowLayout fl = new FlowLayout();
    private JButton bt = new JButton("TestTestTestTest");
    
    //private BevelBorder bb = new BevelBorder(BevelBorder.RAISED, Color.green, Color.red, Color.blue, Color.darkgray);
    //private EmptyBorder bb = new EmptyBorder(3,5,7,9);
    //private EtchedBorder bb = new EtchedBorder(EtchedBorder.LOWERED, Color.green, Color.red);
    //private LineBorder bb = new LineBorder(Color.red, 5, true);
    //private MatteBorder bb = new MatteBorder(5 ,10, 15, 20, new ImageIcon("bbb.gif"));
    //private TitledBorder bb = new TitledBorder(new LineBorder(Color.red, 3),"Title",TitledBorder.CENTER, TitledBorder.BELOW_BOTTOM);
    private CompoundBorder bb = new CompoundBorder(
        new LineBorder(Color.red, 3)
        , new SoftBevelBorder(SoftBevelBorder.RAISED)
    );
    
    public Round22_Ex07_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(400, 300);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(fl);
        bt.setBorder(bb);
        con.add(bt);
    }
    public void start() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

public class Round22_Ex07 {
    public static void main(String[] args) { 
        new Round22_Ex07_Sub();
    }
}

 

메뉴

import java.awt.*;
import java.awt.swing.*;
import java.awt.border.*;

class Round22_Ex08_Sub extends JFrame {
    
    private JMenuBar jmb = new JMenuBar();
    private JMenu file = new JMenu("파일");
    private JMenuItem fnew = new JMenuItem("파일");
    private JMenuItem fopen = new JMenuItem(new ImageIcon("bbb.gif"));
    private JMenuItem fexit = new JMenuItem("종료", new ImageIcon("ccc.gif"));
    private JMenu edit = new JMenu("수정");
    private JMenu esize = new JMenu("크기");
    private JRadioButtonMenuItem es10 = new JRadioButtonMenuItem("10");
    private JRadioButtonMenuItem es20 = new JRadioButtonMenuItem("20");
    private JRadioButtonMenuItem es30 = new JRadioButtonMenuItem("30");
    private ButtonGroup bg = new ButtonGroup();
    private JMenu ecolor = new JMenu("색상");
    private JCheckboxMenuItem ecred = new JCheckboxMenuItem("RED");
    private JCheckboxMenuItem ecgreen = new JCheckboxMenuItem("GREEN");
    private JCheckboxMenuItem ecblue = new JCheckboxMenuItem("BLUE");
    private JMenu help = new JMenu("도움말");
    
    public Round22_Ex08_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(400, 300);
        this.setVisible(true);
    }
    
    public void init() {
        this.setJMenuBar(jmb);
        fexit.setArmed(true);
        file.add(fnew);
        file.addSeparator();
        file.add(fopen);
        file.addSeparator();
        file.add(exit);
        jmb.add(file);
        edit.setBorder(new LineBorder(Color.red, 3));
        esize.setBorder(new BevelBorder(BevelBorder.RAISED));
        ecolor.setBorder(new BevelBorder(BevelBorder.RAISED));
        bg.add(es10);
        bg.add(es20);
        bg.add(es30);
        esize.add(es10);
        esize.add(es20);
        esize.add(es30);
        edit.add(esize);
        edit.addSeparator();
        ecolor.add(ecred);
        ecolor.add(ecgreen);
        ecolor.add(ecblue);
        edit.add(ecolor);
        jmb.add(edit);
        jmb.add(help);
    }
    public void start() {

    }
}

public class Round22_Ex08 {
    public static void main(String[] args) { 
        new Round22_Ex08_Sub();
    }
}

 

Box ( 컴포넌트를 박스로 묶어 관리)

import java.awt.*;
import java.awt.swing.*;
import java.awt.border.*;

class Round22_Ex09_Sub extends JFrame {
    
    private Container con;
    private FlowLayout fl = new FlowLayout();
    private JButton[] bt = new JButton[6];
    private Box box, box1, box2;
        
    public Round22_Ex09_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(fl);
        for(int i=0; i<6; i++) {
            bt[i] = new JButton(String.valueOf(i + 1));
        }
        box = Box.createVerticalBox();
        box.add(Box.createVerticalStruct(10)); //10픽셀의 사이 간격을 추가한다.
        for(int i=0; i<3; i++) {
            box.add(bt[i]);
            box.add(Box.createVerticalStruct(10));
        }
        //con.add(box);
        
        box1 = Box.createHorizontalBox();
        box1.add(Box.createHorizontalStruct(170));
        for(int i=3; i<6; i++) {
            box1.add(bt[i]);
            box1.add(Box.createHorizontalStruct(10));
        }
        //con.add(box1);
        
        box2 = Box.createHorizontalBox();
        box2.add(box);
        box2.add(Box.createHorizontalStruct(30));
        box2.add(box1);
        con.add(box2);
    }
    public void start() {

    }
}

public class Round22_Ex09 {
    public static void main(String[] args) { 
        new Round22_Ex09_Sub();
    }
}

 

JDialog

import java.awt.*;
import java.awt.event.*;
import java.awt.swing.*;
import java.awt.border.*;

class Round22_Ex10_Sub extends JFrame implements ActionListener {
    
    private Container con;
    private FlowLayout fl = new FlowLayout();
    private JLabel lb = new JLabel("ID : ", JLable.RIGHT);
    private JTextField tf = new JTextField(10);
    private JDialog dlg = new JDialog(this, "확인");
    private Container dlgcon;
    private JLabel dlglb = new JLabel("사용할 수 있는 ID입니다.",JLabel.CENTER);
    private BorderLayout dlglb = new BorderLayout();
        
    public Round22_Ex10_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(fl);
        con.add(lb);
        con.add(tf);
        dlgcon = dlg.getContentPane();
        clgcon.setLayout(dlglb);
        dlglb.setBorder(new BevelBorder(BevelBorder.RAISED));
        dlgcon.add("Center",dlglb);
        dlg.setSize(200, 150);
        Toolkit tk = Toolkit.getDefaultToolkit();
        Dimension di = tk.getScreenSize();
        Dimension di1 = dlg.getSize();
        dlg.setLocation(
            (int)(di.getWidth()/2 - di1.getWidth()/2)
            , (int)(di.getHeight()/2 - di1.getHeight()/2)
        );
    }
    public void start() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        tf.addActionListener(this);
        dlg.setDefaultCloseOperation(WindowConstants.HIDE_ON_CLOSE);
    }
    
    public void actionPerformed(ActionEvent e) {
        if( e.getSource() == tf ) {
            dlg.setVisible(true);
        }
    }
}

public class Round22_Ex10 {
    public static void main(String[] args) { 
        new Round22_Ex10_Sub();
    }
}

 

JFileChooser, JColorChooser

import java.awt.*;
import java.awt.swing.*;


class Round22_Ex11_Sub extends JFrame {
    
    private JColorChooser jcc = new JColorChooser();
    private JFileChooser jfc = new JFileChooser("C:\\");
        
    public Round22_Ex11_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
        
        Color cc = jcc.showDialog(this,"나의 색상선택", Color.black);
        System.out.println("선택한 색상 = " + cc);
        jcc.setColor(cc); // 기본 색상 지정해 두기
        System.out.println("다시 얻어오기 = " + jcc.getColor());
        jfc.setDialogTitle("호호호");
        jfc.setMultiSelectionEnabled(true); // 다중 선택 가능하게 만들기
        
        //버튼에 툴팁 표시하기
        jfc.setApproveButtonToolTipText("하하하라는 글자가찍혀있네요");
        jfc.showDialog(this, "하하하");
        //jfc.showOpenDialog(this);
        //jfc.showSaveDialog(this);      
    }
    
    public void init() {
    
    }
    public void start() {

    }
}

public class Round22_Ex11 {
    public static void main(String[] args) { 
        new Round22_Ex11_Sub();
    }
}

 

JTextArea, JScrollPane

import java.awt.*;
import java.awt.swing.*;


class Round22_Ex12_Sub extends JFrame {
    
    private Container con;
    private BorderLayout bl = new BorderLayout();
    private JButton bt = new JButton("1");
    private JButton bt1 = new JButton("1");
    private JTextArea ta = new JTextArea();
    private JScrollPane jsp = new JScrollPane( ta );
        
    public Round22_Ex12_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(bl);
        JPanel jp = new JPanel(new FlowLayout(FlowLayout.RIGHT));
        jp.add(bt);
        jp.add(bt1);
        con.add("North", jp);
        jsp.setWheelScrollingEnabled(true); // 스크롤을 가능하게 만든다.
        con.add("Center" , jsp);
    }
    public void start() {

    }
}

public class Round22_Ex12 {
    public static void main(String[] args) { 
        new Round22_Ex12_Sub();
    }
}

 

JComboBox

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex13_Sub extends JFrame {
    
    private Container con;
    private String[] str = {"AAA", "BB", "CCC", "DDD", "EEE"};
    private JComboBox jcb = new JComboBox(str);
        
    public Round22_Ex13_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
        
        System.out.println("얻어온 객체 = " + (String)jcb.getItemAt(2));
        System.out.println("포함된 객체 개수 = " + jcb.getItemCount());
        System.out.println("현재 선택된 객체 = " + (String)jcb.getSelectedItem());
        
        try { Thread.sleep(2000); } catch( InterruptedException e) {}
        jcb.setSelectedIndex(2);
        jcb.setSelectedItem("BBB");
        jcb.showPopup();
        con.repaint();
        
        try { Thread.sleep(2000); } catch( InterruptedException e) {}
        jcb.hidePopup();
        con.repaint();
    }
    
    public void init() {
        Vector vc = new Vector();
        vc.add("AAA");
        vc.add("BBB");
        jcb = new JComboBox(vc);
        
        con = this.getContentPane();
        con.setLayout(new FlowLayout());
        jcb.addItem("FFF");
        jcb.setEditable(true);
        jcb.setMaximumRouCount(3);
        con.add(jcb);
    }
    public void start() {

    }
}

public class Round22_Ex13 {
    public static void main(String[] args) { 
        new Round22_Ex13_Sub();
    }
}

 

JInternalFrame : 프레임 내에 있는 작은 프레임

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex14_Sub extends JFrame {
    
    private Container con;
    private BorderLayout bl = new BorderLayout();
    private JButton bt = new JButton("1");
    private JButton bt1 = new JButton("2");
    private JPanel jp = new JPanel(null);
    
    // 최대, 최소, 아이콘버튼, x버튼
    private JInternalFrame jif = new JInternalFrame("제목", true, true, true, true);
        
    public Round22_Ex14_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);        
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(bl);
        con.add("West",bt);
        con.add("South",bt1);
        Container cc = jif.getContentPane();
        cc.setLayout(new FlowLayout());
        cc.add(new JButton("1"));
        cc.add(new JButton("2"));
        //jif.setClosable(false);
        jif.setFrameIcon(new ImageIcon("bbb.gif"));
        //jif.setIconifiable(false); //아이콘화 버튼의 사용유뮤
        //jif.setMaximizable(false); //최대 최소 버튼의 사용유무
        try {
            jif.setMaximum(true);  // 기본적으로 최대크기 보여줄 것을 설정
        } catch (Exception e){}
        jif.setSize(100, 80);
        jif.setVisible(true);
        jp.add("Center",jif);
        con.add("Center",jp);
    }
    public void start() {

    }
}

public class Round22_Ex14 {
    public static void main(String[] args) { 
        new Round22_Ex14_Sub();
    }
}

 

이미지 중심 글자 배치

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex15_Sub extends JFrame {
    
    private Container con;
    private JLabel lb = new JLabel();
    private JLabel lb1 = new JLabel(new ImageIcon("bb.gif"));
    private JLabel lb2 = new JLabel(new ImageIcon("bb.gif"), JLabel.LEFT);
    private JLabel lb3 = new JLabel("Test");
    private JLabel lb4 = new JLabel("Test1", JLabel.CENTER);
    private JLabel lb4 = new JLabel("Test2", new ImageIcon("aa.gif"), JLabel.CENTER);
    
    
    // 최대, 최소, 아이콘버튼, x버튼
    private JInternalFrame jif = new JInternalFrame("제목", true, true, true, true);
        
    public Round22_Ex15_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
        System.out.println(lb5.getDisabledIcon());
        System.out.println(lb5.getIcon());
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(new GridLayout(3, 2));
        con.add(lb);
        con.add(lb1);
        con.add(lb2);
        con.add(lb3);
        con.add(lb4);
        lb5.setHorizontalTextPosition(SwingConstants.LEFT);
        lb5.setVerticalTextPosition(SwingConstants.BOTTOM);
        con.add(lb5);
    }
    public void start() {

    }
}

public class Round22_Ex15 {
    public static void main(String[] args) { 
        new Round22_Ex15_Sub();
    }
}

 

JList 셀관리

import java.awt.*;
import java.awt.swing.*;


class Round22_Ex16_Sub extends JFrame {
    
    private Container con;
    private String[] str = {"AAA", "BBB", "CCC", "DDD", "EEE"};
    private JList li = new JList(str);
    private JScrollPane jsp = new JScrollPane( li );
        
    public Round22_Ex16_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
        
        System.out.println(li.getCellBounds(1, 3));
        
        try { Thread.sleep(2000); } catch( InterruptedException e ) { }
        li.clearSelection();
        
        try { Thread.sleep(2000); } catch( InterruptedException e ) { }
        String[] str1 = {"aaa", "bbb", "ccc", "ddd", "eee"};
        li.setListData(str1);
        //li.updateUI();
        
        li.setSelectionBackground(Color.red);
        li.setSelectionForeground(Color.yellow);
        li.setSelectedIndex(3);
        
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(new FlowLayout());
        //li.setVisibleRowCount(3);
        li.addSelectionInteval(1, 3);
        con.add(li);
    }
    public void start() {

    }
}

public class Round22_Ex16 {
    public static void main(String[] args) { 
        new Round22_Ex16_Sub();
    }
}

 

JOptionPane

import java.awt.*;
import java.awt.swing.*;


class Round22_Ex17_Sub extends JFrame {
    
    private Container con;
    private JOptionPane jop = new JOptionPane();
        
    public Round22_Ex17_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
        
        /*
        System.out.println(JOptionPane.showConfirmDialog(
            this
            , "저장하시겠습니까?"
            , "저장"
            , JOptionPane.OK_CANCEL_OPTION
            , JOptionPane.QUESTION_MESSAGE
            , new IconImage("bbb.gif")
        ));
        */
        /*
        System.out.println(JOptionPane.showInternalConfirmDialog(
            this
            , "아이디 ? "
            , "ID"
            , JOptionPane.INFORMATION_MESSAGE
            , new IconImage("bbb.gif")
            , new String[] {"AAA", "BBB", "CCC"}
            , "BBB"
        ));
        */
        
        //System.out.println(JOptionPane.showInternalConfirmDialog(con, "저장하시겠습니까?"));
        //System.out.println(JOptionPane.showInternalConfirmDialog(con, "이름 = "));
        //job.showMessageDialog(this, "오류가 발생했습니다.", "오류", JOptionPane.ERROR_MESSAGE);
        
        System.out.println(job.showOptionDialog(
            this
            , "선택하세요 ? "
            , "물건선택"
            , JOptionPane.YES_NO_OPTION
            , JOptionPane.QUESTION_MESSAGE
            , new IconImage("bbb.gif")
            , new String[] {"a", "b", "c", "d", "e", "f"}
            , "a"
        ));
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(new BorderLayout());
    }
    public void start() {

    }
}

public class Round22_Ex17 {
    public static void main(String[] args) { 
        new Round22_Ex17_Sub();
    }
}

 

팝업 메뉴 관리

import java.awt.*;
import java.awt.swing.*;
import java.awt.event.*;


class Round22_Ex18_Sub extends JFrame implements MouseListener {
    
    private Container con;
    private JLabel lb = new JLabel("메모를 하십시오");
    private JTextArea ta = new JTextArea();
    private JScrollPane jsp = new JScrollPane(ta);
    private JPopupMenu jpm = new JPopupMenu();
    private List<JMenuItem> jmis = Arrays.asList(
        new JMenuItem("복사")
        , new JMenuItem("붙여넣기")
        , new JMenuItem("잘라내기")
    );
    
    public Round22_Ex18_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        for(int i=0; i<jmis.size(); i++) {
            jpm.add(jmis.get(i));
            if( i < jmis.size()-1 ) {
              jpm.addSeparator();
            }
        }
        con = this.getContentPane();
        con.setLayout(new BorderLayout());
        con.add("North", lb);
        con.add("Center", jsp);
    }
    public void start() {
        this.setDefaultCloseOption(JFrame.EXIT_ON_CLOSE);
        ta.addMouseListener(this);
    }
    
    public void mouseClicked(MouseEvent e) { }
    public void mousePressed(MouseEvent e) { }
    public void mouseReleased(MouseEvent e) {
        if( e.getSource() == ta ) {
            //팝업 띄우기
            if( e.isPopupTrigger() ) {
                jpm.show(ta, e.getX(), e.getY());
            }
        }
    }
    public void mouseEntered(MouseEvent e) { }
    public void mouseExited(MouseEvent e) { }
}

public class Round22_Ex18 {
    public static void main(String[] args) { 
        new Round22_Ex18_Sub();
    }
}

 

JTabbedPane (CardLayout의 변형)

import java.awt.*;
import java.awt.swing.*;

class Round22_Ex19_Sub extends JFrame {
    
    private Container con;
    private JLabel lb = new JLabel("이것은 탭 팬입니다.");
    private JButton bt = new JButton("확인");
    private JButton bt1 = new JButton("취소");
    privaet JPanel jp = new JPanel(new FlowLayout(FlowLayout.RIGHT));
    privaet JPanel jp1 = new JPanel(new BorderLayout());
    private JTabbedPane jtp = new JTabbedPane(
        JTabbedOane.BOTTOM
        , JTabbedPane.SCROLL_TAB_LAYOUT
    );
    
    private JButton bt2 = new JButton("첫번째 Tab");
    private JButton bt3 = new JButton("두번째 Tab");
    private JButton bt4 = new JButton("세번째 Tab");
    private JButton bt5 = new JButton("네번째 Tab");
    private JButton bt6 = new JButton("다섯번째 Tab");
    
    public Round22_Ex19_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(new BorderLayout(5, 5));
        con.add("North", lb);
        jp.add(bt);
        jp.add(bt1);
        con.add("South", jp);
        
        jtp.add(bt2);
        jtp.add(bt3);
        jtp.add(bt4, 1);
        jtp.add("Title",bt5);
        jtp.add("Title1", new ImageIcon("bbb.gif"), bt6 , "여긴 아이콘이 있습니다.");
        jp1.add("Center",jtp);
        
        jtp.setBackgroundAt(2, Color.red);
        jtp.setDisplayMnemonicIndexAt(3, 0);
        jpt.setEnabledAt(2, false);
        jtp.setForegroundAt(4, Color.yellow);
        jtp.setMnemonicAt(3, 65);
        jtp.setTitleAt(0, "Test");
        
        con.add("Center",jp1);
    }
    public void start() {

    }    
}

public class Round22_Ex19 {
    public static void main(String[] args) { 
        new Round22_Ex19_Sub();
    }
}

 

JTextArea, MouseEvent 오른쪽 마우스 수행

import java.awt.*;
import java.awt.swing.*;
import java.awt.event.*;


class Round22_Ex20_Sub extends JFrame implements MouseListener {
    
    private Container con;
    private JLabel lb = new JLabel("메모장", JLabel.CENTER);
    private JButton bt = new JButton("확인");
    private JTextArea ta = new JTextArea();
    private JScrollPane jsp = new JScrollPane(ta);
    
    public Round22_Ex20_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(new BorderLayout());
        con.add("North", lb);
        con.add("South", bt);
        
        ta.setDragEnabled(true);
        ta.setFocusAccelerator('r');
        ta.setSelectedTextColor(Color.red);
        ta.setSlectionColor(Color.yellow);
       
        con.add("Center", jsp);
    }
    public void start() {
        this.setDefaultCloseOption(JFrame.EXIT_ON_CLOSE);
        ta.addMouseListener(this);
    }
    
    public void mouseClicked(MouseEvent e) { 
        if( e.getSource() == ta ) {
            if( e.getClickCount() == 2 ) {
                //ta.paste();
                //System.out.println(ta.getCaretPositon());
                //ta.moveCaretPosition(0);
                
                ta.setEditable(false);
            }
        }
    }
    public void mousePressed(MouseEvent e) { }
    public void mouseReleased(MouseEvent e) {
        if( e.getSource() == ta ) {
            //팝업 띄우기
            if( e.isPopupTrigger() ) {
                // ta.copy();
                // ta.setCaretPostion(ta.getText().length());
                // ta.setEditable(true);
                // ta.setSelectionStart(3);
                // ta.setSelectionEnd(7);
                
                ta.setText("아무개");
            }
        }
    }
    public void mouseEntered(MouseEvent e) { }
    public void mouseExited(MouseEvent e) { }
}

public class Round22_Ex20 {
    public static void main(String[] args) { 
        new Round22_Ex20_Sub();
    }
}

 

JTextField, JPasswordField

import java.awt.*;
import java.awt.swing.*;
import java.awt.event.*;

class Round22_Ex21_Sub extends JFrame implements ActionListener {
    
    private Container con;
    private JTextArea ta = new JTextArea("abcdefghijklmnopqrstuvwxyz");
    private JScrollPane jsp = new JScrollPane(ta);
    private JLabel lb = new JLabel("ID : ", JLabel.RIGHT);
    private JTextField tf = new TextField();
    private JLabel lb1 = new JLabel("Pass : ", JLabel.RIGHT);
    private JPasswordField jpf = new JPasswordField();
    
    public Round22_Ex21_Sub() {
        super("Test");
        this.init();
        this.start();
        this.setSize(300, 200);
        this.setVisible(true);
        
        try { Thread.sleep(2000); } catch( InterruptedException e) { }
        ta.replaceRange("ABCD", 0, 4);
    }
    
    public void init() {
        con = this.getContentPane();
        con.setLayout(new BorderLayout());
        
        JPane jp = new JPane(new BorderLayout());
        jp.add("West", lb);
        tf.setHorizontalAlignment(JTextField.CENTER);
        jp.add("Center", tf);
        
        JPane jp1 = new JPane(new BorderLayout());
        jp1.add("West", lb1);
        jpf.setEchoChar('%');
        jp1.add("Center", jpf);
        
        con.add("South", jp1);
        con.add("North", jp);
        con.add("Center", jsp);
    }
    public void start() {
        jpf.addActionListener(this);
    }
    
    public void actionPerformed(ActionEvent e) {
        if( e.getSource() == jpf ) {
            String str = new String(jpf.getPassword());
            System.out.println("얻어온 비밀번호 = " + str);
        }
    }
}

public class Round22_Ex21 {
    public static void main(String[] args) { 
        new Round22_Ex21_Sub();
    }
}

 

티스토리툴바