📄 main.java
字号:
/*
* jisuanqi.java
*
* Created on 2007年11月19日, 下午11:12
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package jisuanqi;import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
class MyFrame extends Frame implements ActionListener
{
private double temp=0.0; //temp 寄存器
private String sysMR="0"; //sysMR
private String MR="0."; //MR
private boolean f=false,y=false,d=false; //标记有没有运算符作用,false为没有运算符，y为刚刚有运算符 ,d为是不是0.n
int flag=0; //标记是哪种运算,+=1,*=2,/=3,-=4;
MenuBar menubar;
Menu menu;
MenuItem item1;
MenuItem item2;
TextField text,text2;
MyWindowListener listener=new MyWindowListener(); // 这里对象一定要实例化,监视器是一个对象
MyFrame()
{
setLayout(null);
addWindowListener(listener);
setResizable(false);
setBounds(50,50,343,255);
setVisible(true);
//End frame
item1=new MenuItem("复制");
item1.addActionListener(this);
item1.setShortcut(new MenuShortcut(KeyEvent.VK_C));
item2=new MenuItem("粘贴");
item2.setShortcut(new MenuShortcut(KeyEvent.VK_V));
item2.addActionListener(this);
menu=new Menu("编辑");
menu.add(item1);
menu.add(item2);
menubar=new MenuBar();
menubar.add(menu);
setMenuBar(menubar);
//End menuBar
text=new TextField("0.",35);
text.setBounds(20,50,303,20);
add(text);
//End textField
Panel panel0=new Panel();
panel0.setLayout(null);
panel0.setBounds(23,75,300,30);
text2=new TextField(3);
text2.setBounds(0,2,32,26);
panel0.add(text2);
Button button1=new Button("Backspace");button1.addActionListener(this);
Button button2=new Button("CE");button2.addActionListener(this);
Button button3=new Button("C");button3.addActionListener(this);
button1.setBounds(52,2,80,26);
button2.setBounds(146,2,70,26);
button3.setBounds(230,2,70,26);
panel0.add(button1);
panel0.add(button2);
panel0.add(button3);
add(panel0);
//End panel0
MyPanel panel1,panel2,panel3,panel4;
panel1=new MyPanel();
panel1.button1.setLabel("MC");panel1.button1.addActionListener(this);
panel1.button2.setLabel("7");panel1.button2.addActionListener(this);
panel1.button3.setLabel("8");panel1.button3.addActionListener(this);
panel1.button4.setLabel("9");panel1.button4.addActionListener(this);
panel1.button5.setLabel("/");panel1.button5.addActionListener(this);
panel1.button6.setLabel("sqrt");panel1.button6.addActionListener(this);
panel2=new MyPanel();
panel2.button1.setLabel("MR");panel2.button1.addActionListener(this);
panel2.button2.setLabel("4");panel2.button2.addActionListener(this);
panel2.button3.setLabel("5");panel2.button3.addActionListener(this);
panel2.button4.setLabel("6");panel2.button4.addActionListener(this);
panel2.button5.setLabel("*");panel2.button5.addActionListener(this);
panel2.button6.setLabel("%");panel2.button6.addActionListener(this);
panel3=new MyPanel();
panel3.button1.setLabel("MS");panel3.button1.addActionListener(this);
panel3.button2.setLabel("1");panel3.button2.addActionListener(this);
panel3.button3.setLabel("2");panel3.button3.addActionListener(this);
panel3.button4.setLabel("3");panel3.button4.addActionListener(this);
panel3.button5.setLabel("-");panel3.button5.addActionListener(this);
panel3.button6.setLabel("1/x");panel3.button6.addActionListener(this);
panel4=new MyPanel();
panel4.button1.setLabel("M+");panel4.button1.addActionListener(this);
panel4.button2.setLabel("0");panel4.button2.addActionListener(this);
panel4.button3.setLabel("+/-");panel4.button3.addActionListener(this);
panel4.button4.setLabel(".");panel4.button4.addActionListener(this);
panel4.button5.setLabel("+");panel4.button5.addActionListener(this);
panel4.button6.setLabel("=");panel4.button6.addActionListener(this);
add(panel1);add(panel2);add(panel3);add(panel4);
panel1.setLocation(20,110);
panel2.setLocation(20,145);
panel3.setLocation(20,180);
panel4.setLocation(20,215);
validate();
}
public void actionPerformed(ActionEvent e)
{
int l=e.getSource().toString().length();
if(e.getSource()==item1)
{
sysMR=text.getText().toString();
text.setText(sysMR);
}
if(e.getSource()==item2)
{
text.setText(sysMR);
}
if(e.getSource().toString().charAt(l-2)=='1')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("1");
else
text.setText(text.getText().concat("1"));
}
else
{
if(y==true)
{
text.setText("1");
y=false;
}
else
text.setText(text.getText().concat("1"));
}
}
if(e.getSource().toString().charAt(l-2)=='2')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("2");
else
text.setText(text.getText().concat("2"));
}
else
{
if(y==true)
{
text.setText("2");
y=false;
}
else
text.setText(text.getText().concat("2"));
}
}
if(e.getSource().toString().charAt(l-2)=='3')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("3");
else
text.setText(text.getText().concat("3"));
}
else
{
if(y==true)
{
text.setText("3");
y=false;
}
else
text.setText(text.getText().concat("3"));
}
}
if(e.getSource().toString().charAt(l-2)=='4')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("4");
else
text.setText(text.getText().concat("4"));
}
else
{
if(y==true)
{
text.setText("4");
y=false;
}
else
text.setText(text.getText().concat("4"));
}
}
if(e.getSource().toString().charAt(l-2)=='5')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("5");
else
text.setText(text.getText().concat("5"));
}
else
{
if(y==true)
{
text.setText("5");
y=false;
}
else
text.setText(text.getText().concat("5"));
}
}
if(e.getSource().toString().charAt(l-2)=='6')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("6");
else
text.setText(text.getText().concat("6"));
}
else
{
if(y==true)
{
text.setText("6");
y=false;
}
else
text.setText(text.getText().concat("6"));
}
}
if(e.getSource().toString().charAt(l-2)=='7')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("7");
else
text.setText(text.getText().concat("7"));
}
else
{
if(y==true)
{
text.setText("7");
y=false;
}
else
text.setText(text.getText().concat("7"));
}
}
if(e.getSource().toString().charAt(l-2)=='8')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("8");
else
text.setText(text.getText().concat("8"));
}
else
{
if(y==true)
{
text.setText("8");
y=false;
}
else
text.setText(text.getText().concat("8"));
}
}
if(e.getSource().toString().charAt(l-2)=='9')
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("9");
else
text.setText(text.getText().concat("9"));
}
else
{
if(y==true)
{
text.setText("9");
y=false;
}
else
text.setText(text.getText().concat("9"));
}
}
if(e.getSource().toString().charAt(l-2)=='0') //temporay ok~~
{
if(f==false)
{
if(text.getText().equals("0.")==true && d==false) text.setText("0.");
else
text.setText(text.getText().concat("0"));
}
else
{
if(y)
{
text.setText("0.");
y=false;
}
else
text.setText(text.getText().concat("0"));
}
}
if(e.getSource().toString().charAt(l-2)=='E' // CE....C...%...MC
|| e.getSource().toString().charAt(l-2)=='C'
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -