jisuanqi.java

java编写的一个小程序（计算器程序 很多人编程过程好像是必不可少的一种游戏）

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;


public class JiSuanQi
{
	public static void main(String args[])
	{
		new JisuanqiFrame();
	}
	
}



class JisuanqiFrame extends Frame
{
	 JFrame frame=new JFrame("Calculator");
 	 Container container=frame.getContentPane();
 	 
	 JButton button1=new JButton("sin");
 	 JButton button2=new JButton("MC");
 	 JButton button3=new JButton("0");
 	 JButton button4=new JButton("1");
 	 JButton button5=new JButton("2");
 	 JButton button6=new JButton("+");
 	 JButton button7=new JButton("cos");
 	 JButton button8=new JButton("MR");
 	 JButton button9=new JButton("3");
 	 JButton button10=new JButton("4");
 	 JButton button11=new JButton("5");
 	 JButton button12=new JButton("-");
 	 JButton button13=new JButton("tan");
 	 JButton button14=new JButton("MS");
 	 JButton button15=new JButton("6");
 	 JButton button16=new JButton("7");
 	 JButton button17=new JButton("8");
 	 JButton button18=new JButton("x");
 	 JButton button19=new JButton("+/-");
 	 JButton button20=new JButton("M+");
 	 JButton button21=new JButton("9");
 	 JButton button22=new JButton(".");
 	 JButton button23=new JButton("=");
 	 JButton button24=new JButton("/");
 	 
 	 JTextField textField1=new JTextField(8);
 	 JTextField textField2=new JTextField(18);
 	  	 
 	 JPanel panel1=new JPanel();
 	 JPanel panel2=new JPanel();
 	 JPanel panel3=new JPanel();
 	 JPanel panel4=new JPanel();
 	 JPanel panel5=new JPanel();
 	 
 	 JLabel label1=new JLabel("                    ");	 
    
    
 	 public  JisuanqiFrame ()
 	 {
 	   container.setLayout(new GridLayout(5,1));
 	  
 	    button1.addActionListener(new Me());
        button2.addActionListener(new Me());
        button3.addActionListener(new Me());
        button4.addActionListener(new Me());
        button5.addActionListener(new Me());
        button6.addActionListener(new Me());
        button7.addActionListener(new Me());
        button8.addActionListener(new Me());
        button9.addActionListener(new Me());
        button10.addActionListener(new Me());
        button11.addActionListener(new Me());
        button12.addActionListener(new Me());
        button13.addActionListener(new Me());
        button14.addActionListener(new Me());
        button15.addActionListener(new Me());
        button16.addActionListener(new Me());
        button17.addActionListener(new Me());
        button18.addActionListener(new Me());
        button19.addActionListener(new Me());
        button20.addActionListener(new Me());
        button21.addActionListener(new Me());
        button22.addActionListener(new Me());
        button23.addActionListener(new Me());
        button24.addActionListener(new Me());
    	 	
        panel1.setLayout(new FlowLayout(FlowLayout.LEFT));
 	    panel1.add(textField1);
 	    panel1.add(label1);
 	    panel1.add(textField2);
 	 	
 	    panel2.setLayout(new GridLayout(1,5));	    
        panel2.add(button1);
        panel2.add(button2);
        panel2.add(button3);
        panel2.add(button4);
        panel2.add(button5);
        panel2.add(button6); 
       
        panel3.setLayout(new GridLayout(1,5));
        panel3.add(button7);
        panel3.add(button8);
        panel3.add(button9);
        panel3.add(button10);
        panel3.add(button11);
        panel3.add(button12);
    
        panel4.setLayout(new GridLayout(1,5));
        panel4.add(button13);
        panel4.add(button14);
        panel4.add(button15);
        panel4.add(button16);
        panel4.add(button17);
        panel4.add(button18);
    
        panel5.setLayout(new GridLayout(1,5));
        panel5.add(button19);
        panel5.add(button20);
        panel5.add(button21);
        panel5.add(button22);
        panel5.add(button23);
        panel5.add(button24);
    
 	    container.add(panel1);
        container.add(panel2);
        container.add(panel3);
        container.add(panel4);
        container.add(panel5);
    
 	 	frame.setBounds(350,350,450,200);
 	 	frame.show();
 	 	
 	 	
 	 	
 	 	}
 	  double temp1=0,temp2=0,temp=0; 	  
   	  char s;
   	  int n=0;//记录数中小数点的个数
   	  Stack s1 = new Stack();//栈12用于最初的四则存储
   	  Stack s2 = new Stack();
   	  Stack s3 = new Stack();//栈34用于加减存储
   	  Stack s4 = new Stack();
   	  double a=0,b=0,c=0;
   	  String m;
   	  
 
 	  
 class Me implements ActionListener
 {
 	 public void actionPerformed(ActionEvent e)
   { 
      if(e.getSource()==button3) 
   	     {
   	     	textField2.setText(textField2.getText()+"0");
   	     	textField1.setText(textField1.getText()+"0");
   	     	}
   	  if(e.getSource()==button4)
   	     {
   	     	textField2.setText(textField2.getText()+"1");
   	     	textField1.setText(textField1.getText()+"1");
   	     	}
   	  if(e.getSource()==button5)
   	     {
   	     	textField2.setText(textField2.getText()+"2");
   	     	textField1.setText(textField1.getText()+"2");
   	     	}
   	  if(e.getSource()==button9)
   	     {
   	     	textField2.setText(textField2.getText()+"3");
   	     	textField1.setText(textField1.getText()+"3");
   	     	}
   	     	
   	  if(e.getSource()==button10)
   	     {
   	     	textField2.setText(textField2.getText()+"4");
   	     	textField1.setText(textField1.getText()+"4");
   	     	}
   	     	
   	  if(e.getSource()==button11)
   	    {
   	    	textField2.setText(textField2.getText()+"5");
   	    	textField1.setText(textField1.getText()+"5");
   	    	}
   	  if(e.getSource()==button15)
   	     {
   	     	textField2.setText(textField2.getText()+"6");
   	     	textField1.setText(textField1.getText()+"6");
   	     	}
   	  if(e.getSource()==button16)
   	     {
   	     	textField2.setText(textField2.getText()+"7");
   	     	textField1.setText(textField1.getText()+"7");
   	     	}
   	     	
   	  if(e.getSource()==button17)
   	     {
   	     	textField2.setText(textField2.getText()+"8");
   	     	textField1.setText(textField1.getText()+"8");
   	     	}
   	     	
   	  if(e.getSource()==button21)
   	     {
   	     	textField2.setText(textField2.getText()+"9");
   	     	textField1.setText(textField1.getText()+"9");
   	     	}
   	     	
   	  if(e.getSource()==button22)
   	  {
   	  	if(n==1)
   	  	  JOptionPane.showMessageDialog( null, "error" );
   	  	
   	     else
   	     {
   	     	textField2.setText(textField2.getText()+".");
   	        textField1.setText(textField1.getText()+".");
   	  	    n=1;
   	  	     }
   	  	}
   	  if(e.getSource()==button6)//+
   	     {
   	     	textField2.setText(textField2.getText()+"+");
   	       // temp1=Double.parseDouble(textField1.getText());
   	        s1.push(textField1.getText());
   	        s2.push("+");
   	        textField1.setText("  ");
   	        n=0;
   	        }
   	  if(e.getSource()==button12)//-
   	     {
   	     	textField2.setText(textField2.getText()+"-");
   	      //  temp1=Double.parseDouble(textField1.getText());
   	        s1.push(textField1.getText());
   	        s2.push("-");
   	        textField1.setText("  ");
   	        n=0;
   	        }    
   	  if(e.getSource()==button18)
   	     {
   	     	textField2.setText(textField2.getText()+"*");
   	      //  temp1=Double.parseDouble(textField1.getText());
   	        s1.push(textField1.getText());
   	        s2.push("*");
   	        textField1.setText("  ");
   	        n=0;
   	        }
   	  if(e.getSource()==button24)
   	     {
   	     	textField2.setText(textField2.getText()+"/");
   	      //  temp1=Double.parseDouble(textField1.getText());
   	        s1.push(textField1.getText());
   	        s2.push("/");
   	        textField1.setText("  ");
   	        n=0;
   	        }
   	        
   	 /* if(e.getSource()==button1)//sin
   	      {
   	          temp2=Double.parseDouble(textField1.getText()); 
   	          temp1=Math.sin(temp1); 	          
   	          s1.push(temp1+"");
   	          textField1.setText("  ");
   	              }  
   	  if(e.getSource()==button7)//cos
   	      {
   	          temp2=Double.parseDouble(textField1.getText()); 
   	          temp1=Math.cos(temp1); 	          
   	          s1.push(temp1+"");
   	          textField1.setText("  ");
   	              } 
   	  if(e.getSource()==button1)//tan
   	      {
   	          temp2=Double.parseDouble(textField1.getText()); 
   	          temp1=Math.tan(temp1); 	          
   	          s1.push(temp1+"");
   	          textField1.setText("  ");
   	              } 
   	  */if(e.getSource()==button2)//清零
   	      {
   	     	textField1.setText("   ");
   	     	textField2.setText("   ");
   	     	
   	     	} 
   	  if(e.getSource()==button23)//=
   	     {
   	      textField2.setText(textField2.getText()+"="); 
   	    //  temp1=Double.parseDouble(textField1.getText());
   	      s1.push(textField1.getText());
   	      
   	      while(!s2.isEmpty())
   	      {
   	      
   	      if(s2.pop()=="*")
   	      {
   	      	a=Double.parseDouble(s1.pop()+"");
   	      	b=Double.parseDouble(s1.pop()+"");
   	      	c=a*b;
   	      	s1.push(c+"");
   	      	} 
   	      if(s2.pop()=="/")//异常：空堆栈
   	      {
   	      	a=Double.parseDouble(s1.pop()+"");
   	      	b=Double.parseDouble(s1.pop()+"");
   	      	c=a/b;
   	      	s1.push(c+"");
   	      	} 
   	      if(s2.pop()=="+")
   	      {
   	      	s4.push("+");
   	      	m=s1.pop()+"";
   	      	s3.push(m);
   	      	}    
   	      if(s2.pop()=="-")
   	      {
   	      	s4.push("-");
   	      	m=s1.pop()+"";
   	      	s3.push(m);
   	      	} 
   	      }
   	      
   	      m=s1.pop()+"";
   	      s3.push(m);
   	      while(!s4.isEmpty())
   	      {
   	      	if(s4.pop()=="+")
   	      	{
   	      		a=Double.parseDouble(s3.pop()+"");
   	      		b=Double.parseDouble(s3.pop()+"");
   	      		c=a+b;
   	      		s3.push(c+"");
   	      		}
   	      	if(s4.pop()=="-")
   	      	{
   	      		a=Double.parseDouble(s3.pop()+"");
   	      		b=Double.parseDouble(s3.pop()+"");
   	      		c=a+b;
   	      		s3.push(c+"");
   	      		}
   	      	}
   	      	m=s3.pop()+"";
   	        textField2.setText(textField2.getText()+m);
   	   
   	      	}
   	      }
   	   }
   	}