java計(jì)算器代碼

1、計(jì)算器imptjava.awt.imptjava.awt.event.imptjavax.swing.publicclassCalculatextendsWindowAdapterimplementsActionListenerJFrameframeJTextFieldshowJButtonbccecabjiajianchengchuequpointsqrtzfbfhds退格，復(fù)位，清空，關(guān)于，加，減，乘，除，等，點(diǎn)，2，加減，百分之，

2、倒數(shù)JButtonb[]=newJButton[10]保存數(shù)字JDialogaboutfinalintlength=30inti=0j=0action=0p=0記錄數(shù)字鍵連續(xù)時(shí)間次數(shù)doublenum=0getValue記錄計(jì)算結(jié)果的值保存值publicCalculat()frame=newJFrame(“計(jì)算器“)frame.addWindowListener(this)frame.setSize(360230)frame.setLo

3、cation(380260)frame.setLayout(newFlowLayout(FlowLayout.CENTER))frame.setResizable(false)show=newJTextField(31)show.setText(“0“)show.setHizontalAlignment(SwingConstants.RIGHT)show.setEnabled(false)frame.add(show)Paneldisp

4、Top=newPanel()frame.add(dispTop)dispTop.setLayout(newGridLayout(1433))bc=newJButton(“BACK“)bc.addActionListener(this)dispTop.add(bc)ce=newJButton(“CE“)ce.addActionListener(this)dispTop.add(ce)c=newJButton(“C“)dispRight.a

5、dd(sqrt)cheng=newJButton(““)cheng.addActionListener(this)dispRight.add(cheng)bfh=newJButton(“%“)bfh.addActionListener(this)dispRight.add(bfh)jian=newJButton(““)jian.addActionListener(this)dispRight.add(jian)ds=newJButton

6、(“1x“)ds.addActionListener(this)dispRight.add(ds)jia=newJButton(““)jia.addActionListener(this)dispRight.add(jia)equ=newJButton(“=“)equ.addActionListener(this)dispRight.add(equ)frame.setVisible(true)計(jì)算器抽象會(huì)報(bào)錯(cuò)publicvoidacti

7、onPerfmed(ActionEvente)getValue=Double.valueOf(show.getText()).doubleValue()f(intk=0k10k)if(e.getSource()==b[k])if(i==0)show.setText(““)Stringstr=show.getText()if(str.length()length)show.setText(show.getText()e.getAction