第九週 - 作業

鏈接：程式設計工藝大師
4*4 Button，點擊button會顯示對應的數字，button上顯示的數字為亂數
程式代碼：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Random;
class test
{


public static void main(String[] args)
{
JFrame jtfMainFrame = new JFrame("Which Button Demo");
jtfMainFrame.setSize(600, 200);
JPanel jplPanel = new JPanel();
int i;
int j=1;
int num1 , num2;
JButton jbnButton[] = new JButton[16];
JButton changeButton[] = new JButton[3];
jplPanel.setLayout (new GridLayout(4, 4));
for(i = 0;i<=15;i++){

Random ran = new Random();
jbnButton[i]=new JButton("Button  "+(ran.nextInt(16)+1));


jplPanel.add(jbnButton[i]);
String s = Integer.toString(i+1);
jbnButton[i].addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
/*if(j<3){
changeButton[j] = jbnButton[i];
num1 = i;
j++;
}
else if(j==3){
changeButton[j]=jbnButton[i];
jbnButton[num1] = changeButton[j];
jbnButton[i] = changeButton[j-1];
j=1;
}*/
//j++;
//JButton btn = (JButton[i])e.getSourec();
//lab.setText(btn.getLabel+".");
System.out.println("Button"+s);
}
});
}

jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
}

}