Java : GUI, 체크박스(Check Box), Radio 버튼, ComboBox 만들기

결과입니다.

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.GridLayout;

import java.awt.Image;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import javax.swing.ButtonGroup;

import javax.swing.ImageIcon;

import javax.swing.JCheckBox;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JTextField;

public class CompoundButtonTest extends JFrame {

JCheckBox cb1, cb2, cb3;

JTextField cb_tf;

JRadioButton rb1, rb2, rb3;

JTextField rb_tf;

public CompoundButtonTest() {

setTitle("복합버튼 테스트");

setDefaultCloseOperation(EXIT_ON_CLOSE);

setPreferredSize(new Dimension(350, 500));

//1.Check Box :

JPanel cbPanel = new JPanel();

cbPanel.setLayout(new GridLayout(2, 1));

JPanel panel = new JPanel();

cb1 = new JCheckBox("Apple");

cb2 = new JCheckBox("Banana");

cb3 = new JCheckBox("Orange");

panel.add(cb1);

panel.add(cb2);

panel.add(cb3);

cbPanel.add(panel);

JPanel panel2 = new JPanel();

cb_tf = new JTextField(15);

panel2.add(cb_tf);

cbPanel.add(panel2);

add(cbPanel,BorderLayout.NORTH);

//체크박스 상태 변경 듣는 리스너 추가

cb1.addItemListener(itemListener);

cb2.addItemListener(itemListener);

cb3.addItemListener(itemListener);

//2.Radio : 

JPanel rbPanel = new JPanel();

rbPanel.setLayout(new GridLayout(2, 1));

JPanel panel3 = new JPanel();

rb1 = new JRadioButton("Korea");

rb2 = new JRadioButton("China");

rb3 = new JRadioButton("Japan");

panel3.add(rb1); panel3.add(rb2); panel3.add(rb3);

//라디오버튼 그릅화

ButtonGroup rg = new ButtonGroup();

rg.add(rb1); rg.add(rb2); rg.add(rb3);

JPanel panel4 = new JPanel();

rb_tf = new JTextField(15);

panel4.add(rb_tf);

rbPanel.add(panel3);

rbPanel.add(panel4);

add(rbPanel,BorderLayout.SOUTH);

//라디오버튼 클릭시 글씨 출력위한 리스너 추가

rb1.addActionListener(rbListener);

rb2.addActionListener(rbListener);

rb3.addActionListener(rbListener);

//3.ComboBox 밑에 이미지 넣기

JPanel centerPanel = new JPanel();

centerPanel.setLayout(new BorderLayout());

JPanel comboPanel = new JPanel();

JComboBox<String> comboBox = new JComboBox<String>();  //보통 String사용

comboBox.addItem("character 1");

comboBox.addItem("character 2");

comboBox.addItem("character 3");

comboBox.addItem("character 4");

comboBox.addItem("character 5");

comboPanel.add(comboBox);

///이미지 보여주기 위한 컴포넌트

ImageIcon icon = new ImageIcon("images/ms_01.png");

icon = new ImageIcon( icon.getImage()

.getScaledInstance(256, 256, Image.SCALE_SMOOTH));

JLabel label = new JLabel(icon); //생성자에 아이콘 지정 가능

centerPanel.add(comboPanel,BorderLayout.NORTH);

centerPanel.add(label,BorderLayout.CENTER);

add(centerPanel, BorderLayout.CENTER); //프레임에 붙이기

//콤보박스에 리스너 붙이기

comboBox.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

System.out.println(comboBox.getSelectedItem());

int index = comboBox.getSelectedIndex();

ImageIcon icon = new ImageIcon("images/ms_0" + (1+index) + ".png");

icon = new ImageIcon( icon.getImage()

.getScaledInstance(256, 256, Image.SCALE_SMOOTH));

label.setIcon(icon);

}

});

pack();

setLocation(600, 100);

setVisible(true);

}//생성자

//Radio 버튼 리스너 객체 생성

ActionListener rbListener = new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String str = e.getActionCommand();

//컴포넌트에 써있는 글씨 리턴

rb_tf.setText(str);

}

};

//CheckBox의 체크상태 변경 듣는 리스너 객체 생성 - 필드 위치

ItemListener itemListener = new ItemListener() {

@Override

public void itemStateChanged(ItemEvent e) {

//체크박스들의 체크상태를 확인하여 true면 써있는 글씰 얻어와서 

//TextField에 보여주기

String str = "";

if( cb1.isSelected() ) str = str + cb1.getText();

if( cb2.isSelected() ) str = str + cb2.getText();

if( cb3.isSelected() ) str = str + cb3.getText();

cb_tf.setText(str);

}

};

public static void main(String[] args) {

// TODO Auto-generated method stub

new CompoundButtonTest();

}

}