버튼 클릭 시 글자 변경
1
1. show events 클릭
2
2. mouse > clicked 더블 클릭
3
3. 소스 내용 추가된 것을 확인 > 소스 추가 후 테스트
package day04;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JButton;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class MySwing02 extends JFrame {
private JPanel contentPane;
JLabel lbl;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MySwing02 frame = new MySwing02();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public MySwing02() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
lbl = new JLabel("200");
lbl.setBounds(36, 30, 57, 15);
contentPane.add(lbl);
// 버튼 클릭 시 아래 작동
JButton btn = new JButton("INCREASE");
btn.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
myclick();
}
});
btn.setBounds(145, 26, 97, 23);
contentPane.add(btn);
}
void myclick() {
int su = Integer.parseInt(lbl.getText());
su = su + 1;
lbl.setText(String.valueOf(su));
}
}
결과 화면1
package day04;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JComboBox;
import javax.swing.JButton;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class MySwing03 extends JFrame {
private JPanel contentPane;
private JTextField tf01;
private JTextField tf03;
private JTextField tf02;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MySwing03 frame = new MySwing03();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public MySwing03() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
tf01 = new JTextField();
tf01.setBounds(12, 25, 86, 21);
contentPane.add(tf01);
tf01.setColumns(10);
tf03 = new JTextField();
tf03.setColumns(10);
tf03.setBounds(306, 25, 116, 21);
contentPane.add(tf03);
tf02 = new JTextField();
tf02.setColumns(10);
tf02.setBounds(131, 25, 86, 21);
contentPane.add(tf02);
JLabel lbl = new JLabel("*");
lbl.setBounds(110, 28, 20, 15);
contentPane.add(lbl);
JButton btn = new JButton("=");
btn.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
myclick();
}
});
btn.setBounds(229, 24, 65, 23);
contentPane.add(btn);
}
void myclick() {
String txt1 = tf01.getText();
int txt01 = Integer.parseInt(txt1);
String txt2 = tf02.getText();
int txt02 = Integer.parseInt(txt2);
int result = txt01 * txt02;
tf03.setText(String.valueOf(result));
}
}
결과 화면2
package day04;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JTextArea;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class MySwing04 extends JFrame {
private JPanel contentPane;
private JTextField tf;
JTextArea ta;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MySwing04 frame = new MySwing04();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public MySwing04() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 240, 523);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lbl = new JLabel("출력단수");
lbl.setBounds(12, 10, 57, 15);
contentPane.add(lbl);
tf = new JTextField();
tf.setBounds(103, 7, 109, 21);
contentPane.add(tf);
tf.setColumns(10);
JButton btn = new JButton("출력하기");
btn.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
myClick();
}
});
btn.setBounds(12, 35, 200, 23);
contentPane.add(btn);
ta = new JTextArea();
ta.setBounds(12, 68, 200, 406);
contentPane.add(ta);
}
void myClick() {
String tex = tf.getText();
int te = Integer.parseInt(tex);
System.out.println(te);
String result= "";
for(int i=1; i<=9; i++) {
result += te + " x " + i + " = " + te*i + "\n";
// System.out.println(result);
}
ta.setText(result);
}
}
결과 화면3
package day04;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JButton;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Random;
public class MySwing05 extends JFrame {
private JPanel contentPane;
JLabel lbl1;
JLabel lbl2;
JLabel lbl3;
JLabel lbl4;
JLabel lbl5;
JLabel lbl6;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
MySwing05 frame = new MySwing05();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public MySwing05() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
lbl1 = new JLabel("__");
lbl1.setFont(new Font("굴림", Font.BOLD | Font.ITALIC, 18));
lbl1.setBounds(32, 38, 31, 15);
contentPane.add(lbl1);
lbl2 = new JLabel("__");
lbl2.setFont(new Font("굴림", Font.BOLD | Font.ITALIC, 18));
lbl2.setBounds(90, 38, 31, 15);
contentPane.add(lbl2);
lbl3 = new JLabel("__");
lbl3.setFont(new Font("굴림", Font.BOLD | Font.ITALIC, 18));
lbl3.setBounds(155, 38, 31, 15);
contentPane.add(lbl3);
lbl4 = new JLabel("__");
lbl4.setFont(new Font("굴림", Font.BOLD | Font.ITALIC, 18));
lbl4.setBounds(225, 38, 31, 15);
contentPane.add(lbl4);
lbl5 = new JLabel("__");
lbl5.setFont(new Font("굴림", Font.BOLD | Font.ITALIC, 18));
lbl5.setBounds(301, 38, 31, 15);
contentPane.add(lbl5);
lbl6 = new JLabel("__");
lbl6.setFont(new Font("굴림", Font.BOLD | Font.ITALIC, 18));
lbl6.setBounds(366, 38, 31, 15);
contentPane.add(lbl6);
JButton btn = new JButton("로또 생성 하기");
btn.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
myClick();
}
});
btn.setBounds(32, 78, 365, 23);
contentPane.add(btn);
}
void myClick() {
int[] arr = {
1,2,3,4,5,6,7,8,9,10,
11,12,13,14,15,16,17,18,19,20,
21,22,23,24,25,26,27,28,29,30,
31,32,33,34,35,36,37,38,39,40,
41,42,43,44,45
};
for(int i=0; i<999; i++) {
int rnd = (int)(Math.random()*45);
int temp = arr[0];
arr[0] = arr[rnd];
arr[rnd] = temp;
}
System.out.println(arr[0] + "\t" + arr[1] + "\t" + arr[2] + "\t" + arr[3] + "\t" + arr[4] + "\t" + arr[5]);
lbl1.setText(String.valueOf(arr[0]));
lbl2.setText(String.valueOf(arr[1]));
lbl3.setText(String.valueOf(arr[2]));
lbl4.setText(String.valueOf(arr[3]));
lbl5.setText(String.valueOf(arr[4]));
lbl6.setText(String.valueOf(arr[5]));
}
}
결과 화면4
