import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;
public class JSQ extends JFrame{
private static final long serialVersionUID = -8568126884560298943L;
public JSQ(){
Container C=getContentPane();
result.setEnabled(false);
result.setHorizontalAlignment(JTextField.RIGHT);
result.setColumns(12);
Font f=new Font("宋体",Font.BOLD,36);
result.setFont(f);
JButton clear=new JButton("CE");
JButton point=new JButton(".");
JButton count=new JButton("=");
JButton add=new JButton("+");
JButton sub=new JButton("—");
JButton mul=new JButton("*");
JButton div=new JButton("/");
JButton back=new JButton("C");
JButton electric=new JButton("ON/OFF");
JButton music=new JButton("music");
JButton[] button=new JButton[10];
for(int i=0;i<=9;i++){
button[i]=new JButton(""+i);
}
JPanel p=new JPanel();
p.setLayout(new BorderLayout(0,0));
p.add(result,BorderLayout.NORTH);
p.setBorder(new EmptyBorder(5,5,5,5));
JPanel p1=new JPanel();
p1.setSize(210,250);
p1.setLayout(new GridLayout(4,5,5,5));
for(int i=9;i>=0;i--){
p1.add(button[i]);
}
p1.add(point);
p1.add(back);
p1.setBorder(new EmptyBorder(5,0,0,0));
JPanel p2=new JPanel();
p2.setLayout(new GridLayout(4,2,5,5));
p2.setBorder(new EmptyBorder(5,0,0,0));
p2.add(music);
p2.add(electric);
p2.add(clear);
p2.add(add);
p2.add(sub);
p2.add(mul);
p2.add(div);
p2.add(count);
JPanel p3=new JPanel();
p3.setLayout(new GridLayout(1,2,5,5));
p3.add(p1);
p3.add(p2);
p.add(p3,BorderLayout.CENTER);
C.add(p);
}
public static void main(String[] args) {
JSQ J=new JSQ();
J.setTitle("计算器");
J.setSize(420,300);
J.setLocationRelativeTo(null);
J.setDefaultCloseOperation(EXIT_ON_CLOSE);
J.setVisible(true);
}
}