cicle.java

计算圆的面积和体积 111111111

//import java.io.*;
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
public class Cicle extends JFrame implements ActionListener{
JLabel j1,j2,j3,j4;
 TextField t,t1,t2,t3;
 
 JButton jb1,jb2;
final double PI=3.14;

 
public Cicle()
{
	
	super("用于圆柱面积和体积的计算");

	Container c1 = getContentPane();
	c1.setLayout(null);
	j1=new JLabel("请输入半径:");	
	j2=new JLabel("请输入高:");
	j3=new JLabel("面积为:");
	j4=new JLabel("体积为:");
	
	t=new TextField();
	t1=new TextField();
	t2=new TextField();
	t3=new TextField();
	
	jb1=new JButton("确定");
	jb2=new JButton("取消");
	
	j1.setBounds(3,50,130,25);
	t.setBounds(80,50,130,25);
	j2.setBounds(240,50,130,25);
	t1.setBounds(300,50,130,25);
	j3.setBounds(3,100,130,25);
	t2.setBounds(80,100,130,25);
	j4.setBounds(240,100,130,25);
	t3.setBounds(300,100,130,25);
	
	jb1.setBounds(150,150,90,40);
	jb2.setBounds(250,150,90,40);
	jb1.setBackground(Color.red);
	jb2.setBackground(Color.green);
	c1.setBackground(Color.yellow);

	
	
	c1.add(t);
	c1.add(t1);
	c1.add(t2);
	c1.add(t3);
	c1.add(j1);
	c1.add(j2);
	c1.add(j3);
	c1.add(j4);
	c1.add(jb1);
	c1.add(jb2);
	jb1.addActionListener(this);
	jb2.addActionListener(this);
	
	setBounds(300, 200, 450, 300);
	//setSize(600,600);
	setVisible(true);
	
	
}
public void actionPerformed(ActionEvent e)
{
	try
	{
	if(e.getSource()==jb1)
	{
		int r = Integer.parseInt(t.getText());
		int h=Integer.parseInt(t1.getText());
		
		t2.setText(""+2*PI*r*(r+h));
		
		t3.setText((PI*r*r*h)+"");
		
		 
		 
	}
	else
	{
		t.setText("");
		t1.setText("");
		t2.setText("");
		t3.setText("");
	}
	}
	catch(Exception e1)
	{
		System.out.println("你输入的数据类型不对");
	}
}
/*
   public void show()
   {
	   double s,t;
	   s=2*PI*r*(r+h);
	   t=PI*r*r*h;
	   System.out.println("你输入的半径和高为："+r+","+h);
	   System.out.println("面积为："+s);
	   System.out.println("体积为："+t);
	  
   }
   
   public void setR(double rb)
   {
	   r=rb;
   }
   public void setH(double hb)
   {
	   h=hb;
   }*/
	public static void main(String[] args) 
	{
		/*try
		{
		double rs,rh;
		BufferedReader bin=new BufferedReader(new InputStreamReader(System.in));
		
		
		System.out.println("请输入半径和高:");
		rs=Double.parseDouble(bin.readLine());
		c.setR(rs);
		rh=Double.parseDouble(bin.readLine());
		c.setH(rh);
		c.show();
		}
		catch(IOException e)
		{
			System.out.println("你输入的数据有误!");
		}
		*/
		new Cicle();
	}

}