用java编写简易计算器程序,java编写简易计算器实现加减乘除

用Java设计一个简单的-1。如何找到JAVA编写简易计算器程序，如何使用JAVA语言编写计算器small/123，关于使用java程序编写a简单计算器公共类计算器{特权字符串结果0；Privateintop0，带有java编写a simple计算器* @(#)j calculator，java1.0006/17/2015 * importjava. awt . event . *；importjavax . swing . *；/* * * asimpleculatorprogram，*IsawthisprograminaQQgroup。

//html code *//servlet代码导入java. io . io exception；importjava. io . printwriter；importjavax . servlet . servlet exception；importjavax . servlet . http . http servlet；importjavax . servlet . http . http servlet request；import javax.servle .

importjava. awt . borderlayout；importjava. awt . color；importjava. awt . gridlayout；importjava. awt . event . action event；importjava. awt . event . action listener；importjavax . swing . image icon；importjavax . swing . jbutton；importjavax . swing . jframe；importjavax . swing . jpanel；importjavax . swing . jtextfield；importjavax . swing . swing constants；publicsclassjisuanqiextendsjframeimplementsactionlistener {/* * * */privatestaticfinallonserialversionuid1l；ResultresultnewResult()；//定义文本的面板n。

具体代码如下:importjavax . swing . *；importjava. awt . event . *；importjava. awt . *；publiclasscalculatorextendsjframeimplementsactionlistener { privateJFramejf；privateJButtonimportjavax . swing . *；importjava. awt . *；importjava. awt . event . *；publicsclasscalculatorimplementsactionlistener { Strings，S1；doubled1，D2；JFramejfnewJFrame(小计算器by graduate)；JTextFieldtfnewJTextField()；publicfoidinit()//Implementation计算器Interface { container cjf . getcontentpane()；TF . sethorizontal alignment(JTextField。对)；//文本框c.add(tf，

与一楼简单的packagecom.isoftstone.baidu相比；importjava. awt . event . action event；importjava. awt . event . action listener；importjavax . swing . jbutton；importjavax . swing . jframe；importjavax . swing . jlabel；importjavax . swing . joptionpane；importjavax . swing . jpanel；importjavax . swing . jtextfield；publicsclasscalcdemoextendesjframe { privatestaticfinallonserialversionuidl；privatejlabelable 1 new jlabel()；privatejlabel 2 new jlabel()；privatejlabelabel 3 new jlabel()；privateJTextFieldfiel .

form package calc；importjava. awt . *；importjava. awt . event . *；importjavax . swing . *；/* * * *计算器程序* */PubliclClassFrameXTENDSJSFrame { jbutton，直接拿去给你运行packagetestimportjava. awt . borderlayout；importjava. awt . button；importjava. awt . color；importjava. awt . flow layout；importjava. awt . frame；importjava. awt . gridlayout；importjava. awt . label；importjava. awt . menu；importjava. awt . menubar；importjava. awt . menuitem；importjava. awt . panel；importjava. awt . scroll pane；importjava. awt . textarea；importjava. awt . textfield；importjava. awt . event . action event；importjava. awt . event . action listener；importjava. text . decimal format；我是.

/**@(#)JCalculator。java1.0006/17/2015 */importjava. awt . *；importjava. awt . event . *；importjavax . swing . *；/* * * asimpleculatorprogram。*IsawthisprograminaQQgroup，和helpafriendcorrectit。

* * @ authorSingyuenYip * @ version 1.0012/29/2009 * @ seeJFrame * @ seeActionListener */public classjcalculatorextendsjframeimplementsactionlistener {/* * * SerialVersionUID */privatestaticginanciallongserialversionuidl；/* * * thissclasshelpcoothhewindow。* @ authorSingyuenYip * */private classw .

public class calculator { privatestringresult 0；privateintop0，add1，sub2，mul3，div4privatedoublestringToDouble(string x){ doubley double . parse double(x)；returny} privatevoidooperate(string x){ doublex 1 stringtodouble(x)；doubleystringToDouble(结果)；开关(op){ case 0:resultx；打破；case 1:result string . value of(y x1)；打破；case 2:result string . value of(yx1)；打破；case 3:result string . value of(y * x1)；打破；情况4:如果(x1！0){ result string . value of(y/x1)；}else{resultThedivisorcan 。