JFrame 이미지 선택 테스트

package com.oraclejava.exam3;

import java.awt.BorderLayout;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.Toolkit;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class JaFrmTest extends JFrame {

JComboBox<String> cbox;

String[] items = {"국화", "사막", "수국", "해파리"};

Toolkit tk = Toolkit.getDefaultToolkit();

public JaFrmTest(String sTitle) {

setTitle(sTitle);

setSize(1024, 768);

setDefaultCloseOperation(EXIT_ON_CLOSE);

cbox = new JComboBox<>(items);

add(cbox, BorderLayout.NORTH);

MyPanel pn = new MyPanel();

add(pn);

pn.img = tk.getImage("Chrysanthemum.jpg");

cbox.addActionListener(e -> {

String s = (String)cbox.getSelectedItem();

if(s.equals("국화")) {

pn.img = tk.getImage("Chrysanthemum.jpg");

}

else if(s.equals("사막")) {

pn.img = tk.getImage("Desert.jpg");

}

else if(s.equals("수국")) {

pn.img = tk.getImage("Hydrangeas.jpg");

}

else if(s.equals("해파리")) {

pn.img = tk.getImage("Jellyfish.jpg");

}

else {

pn.img = tk.getImage("Chrysanthemum.jpg");

}

repaint(); // 화면갱신

});

setVisible(true); // 마지막에

}

public static void main(String[] args) {

// TODO Auto-generated method stub

JaFrmTest frm = new JaFrmTest("이미지선택");

}

class MyPanel extends JPanel{

Image img = null;

public MyPanel() {

}

// 그림을 그리는 곳

@Override

protected void paintComponent(Graphics g) {

// TODO Auto-generated method stub

super.paintComponent(g);

if(img != null)

{

g.drawImage(img, 0, 10, this);

}

}

}

}