eclipse实现简单计算器代码

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1、packageComputer;importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;importjavax.swing.border.*;importjava.util.LinkedList;importjava.text.NumberFormat;publicclassCacultorextendsFrameimplementsActionListener{/***@paramargs*/NumberButtonnumberButton[];OperationBut

2、tonoperationButton[];Button小数点按钮,正负号按钮,退格按钮,求倒数按钮,等号按钮,清零按钮;Panelpanel;JTextFieldresultShow;String运算符号[]={"+","-","*","/"};LinkedList链表;boolean是否按下等号=false;publicCacultor(){super("计算器");链表=newLinkedList();numberButton=newNumberButton[10];for(inti=0;i<=9;i++){numberButto

3、n[i]=newNumberButton(i);numberButton[i].addActionListener(this);}operationButton=newOperationButton[4];for(inti=0;i<4;i++){operationButton[i]=newOperationButton(运算符号[i]);operationButton[i].addActionListener(this);}小数点按钮=newButton(".");正负号按钮=newButton("+/-");等号按钮=newButt

4、on("=");求倒数按钮=newButton("1/x");退格按钮=newButton("退格");清零按钮=newButton("c");清零按钮.setForeground(Color.red);退格按钮.setForeground(Color.red);等号按钮.setForeground(Color.red);求倒数按钮.setForeground(Color.blue);正负号按钮.setForeground(Color.blue);小数点按钮.setForeground(Color.blue);退格按钮.addActi

5、onListener(this);清零按钮.addActionListener(this);等号按钮.addActionListener(this);小数点按钮.addActionListener(this);正负号按钮.addActionListener(this);求倒数按钮.addActionListener(this);resultShow=newJTextField(10);resultShow.setHorizontalAlignment(JTextField.RIGHT);resultShow.setForeground

6、(Color.blue);resultShow.setFont(newFont("TimesRoman",Font.PLAIN,14));resultShow.setBorder(newSoftBevelBorder(BevelBorder.LOWERED));resultShow.setBackground(Color.white);resultShow.setEditable(false);panel=newPanel();panel.setLayout(newGridLayout(4,5));panel.add(numberBu

7、tton[1]);panel.add(numberButton[2]);panel.add(numberButton[3]);panel.add(operationButton[0]);panel.add(清零按钮);panel.add(numberButton[4]);panel.add(numberButton[5]);panel.add(numberButton[6]);panel.add(operationButton[1]);panel.add(退格按钮);panel.add(numberButton[7]);panel.a

8、dd(numberButton[8]);panel.add(numberButton[9]);panel.add(operationButton[2]);panel.add(求倒数按钮);panel.add(number