import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Calculate{  private Frame f;  private Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14,b15,b16;  private  Panel p1,p2;  public static void main(String args[]){  Calculate cte=new Calculate();    cte.go();  }public ...
    
    
    
    
          
import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Calculate{  private Frame f;  private Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14,b15,b16;  private  Panel p1,p2;  public static void main(String args[]){  Calculate cte=new Calculate();    cte.go();  }public ...
    
    
    
    
          
//图形用户界面之一import java.awt.*;public class Add extends Frame{public Add(String s){  super(s);  }  public static void main(String args[]){    Add m=new Add("Frame with Panel");    Panel p=new Panel();    m.setSize(400,400);    m.setBackground(Color.blue);    m.setLayout(null);    p.setSize(200,200...
    
    
    
    
          
import java.awt.*;public class A extends Frame{public A(String s){  super(s);  }  public static void main(String args[]){   A m=new A("Hello FlowLayout");   m.setSize(400,400);   m.setBackground(Color.blue);   Panel p=new Panel();   p.setSize(200,200);   p.setBackground(Color.yellow);   m.setLa...