java编写的简单计算器代码

IMPORTJAVAAWTIMPORTJAVAAWTEVENTIMPORTJAVAXSWINGIMPORTJAVAUTILVECTORPUBLICCLASSTUOSTRINGSTR1“0“/运算数1初值一定为0为了程序的安全STRINGSTR2“0“/运算数2STRINGFH“/运算符STRINGJG“/结果/状态开关重要INTK11/开关1用于选择输入方向将要写入STR2或STR2INTK21/开关2符号键次数K21说明进行的是2398这样的多符号运算INTK31/开关3STR1是否可以被清01时可以1时不能被清0INTK41/开关4STR2同上INTK51/开关5控制小数点可否被录入1时可以1输入的小数点被丢掉JBUTTONJICUNQI/寄存器记录是否连续按下符号键VECTORVTNEWVECTOR20,10JFRAMEFRAMENEWJFRAME“SUNSHINE计算器“JTEXTFIELDJG_TEXTFIELDNEWJTEXTFIELDJG,20/20列JBUTTONCLEAR_BUTTONNEWJBUTTON“清除“JBUTTONBUTTON0NEWJBUTTON“0“JBUTTONBUTTON1NEWJBUTTON“1“JBUTTONBUTTON2NEWJBUTTON“2“JBUTTONBUTTON3NEWJBUTTON“3“JBUTTONBUTTON4NEWJBUTTON“4“JBUTTONBUTTON5NEWJBUTTON“5“JBUTTONBUTTON6NEWJBUTTON“6“JBUTTONBUTTON7NEWJBUTTON“7“JBUTTONBUTTON8NEWJBUTTON“8“JBUTTONBUTTON9NEWJBUTTON“9“JBUTTONBUTTON_DIANNEWJBUTTON“JBUTTONBUTTON_JIANEWJBUTTON“JBUTTONBUTTON_JIANNEWJBUTTON“JBUTTONBUTTON_CHENGNEWJBUTTON“JBUTTONBUTTON_CHUNEWJBUTTON“/“JBUTTONBUTTON_DYNEWJBUTTON“/PUBLICSTATICVOIDMAINSTRINGARGSTUOTUONEWTUO/TUOBUTTON0SETMNEMONICKEYEVENTVK_0/等效键/其它等效键略,JG_TEXTFIELDSETHORIZONTALALIGNMENTJTEXTFIELDRIGHT/文本框右对齐JPANELPANNEWJPANELPANSETLAYOUTNEWGRIDLAYOUT4,4,5,5/四行四列边距为5像素PANADDBUTTON7PANADDBUTTON8PANADDBUTTON9PANADDBUTTON_CHUPANADDBUTTON4PANADDBUTTON5PANADDBUTTON6PANADDBUTTON_CHENGPANADDBUTTON1PANADDBUTTON2PANADDBUTTON3PANADDBUTTON_JIANPANADDBUTTON0PANADDBUTTON_DIANPANADDBUTTON_DYPANADDBUTTON_JIAPANSETBORDERBORDERFACTORYCREATEEMPTYBORDER5,5,5,5/PAN对象的边距JPANELPAN2NEWJPANELPAN2ADDJG_TEXTFIELDJPANELPAN3NEWJPANEL/为什么要多此一句呢因为我不会设置按钮的大小PAN3SETLAYOUTNEWFLOWLAYOUTPAN3ADDCLEAR_BUTTON/CLEAR_BUTTONSETSIZE10,10/设置清零按钮的大小吗的不好使FRAMESETLOCATION300,200/主窗口出现在位置FRAMESETRESIZABLEFALSE/不能调大小FRAMEGETCONTENTPANESETLAYOUTNEWBORDERLAYOUTFRAMEGETCONTENTPANEADDPAN2,BORDERLAYOUTNORTHFRAMEGETCONTENTPANEADDPAN,BORDERLAYOUTCENTERFRAMEGETCONTENTPANEADDPAN3,BORDERLAYOUTSOUTHFRAMEPACKFRAMESETVISIBLETRUE/以上是控件和布局/下面是事件处理程序/数字键CLASSJIANTINGIMPLEMENTSACTIONLISTENERPUBLICVOIDACTIONPERFORMEDACTIONEVENTESTRINGSSJBUTTONEGETSOURCEGETTEXTJICUNQIJBUTTONEGETSOURCEVTADDJICUNQIIFK11IFK31STR1“K51/还原开关K5状态STR1STR1SS/K21K3K31/SYSTEMOUTPRINTLNSTR1JG_TEXTFIELDSETTEXTSTR1/显示ELSEIFK12IFK41STR2“K51/还原开关K5状态STR2STR2SS/K22K4K41/测试/JG_TEXTFIELDSETTEXTSTR2/符号CLASSJIANTING_FHIMPLEMENTSACTIONLISTENERPUBLICVOIDACTIONPERFORMEDACTIONEVENTESTRINGSS2JBUTTONEGETSOURCEGETTEXTJICUNQIJBUTTONEGETSOURCEVTADDJICUNQIIFK21K12/开关K1为1时,向数1写为2时，向数2写K51FHSS2K2K21/按符号键的次数ELSEINTAVTSIZEJBUTTONCJBUTTONVTGETA2IFCGETTEXTEQUALS“STR1JGK12/开关K1为1时,向数1写为2时，向数2写K51K41FHSS2K2K21/清除CLASSJIANTING_CLEARIMPLEMENTSACTIONLISTENERPUBLICVOIDACTIONPERFORMEDACTIONEVENTEJICUNQIJBUTTONEGETSOURCEVTADDJICUNQIK51K21K11K31K41STR1“0“STR2“0“FH“JG“JG_TEXTFIELDSETTEXTJGVTCLEAR/等于CLASSJIANTING_DYIMPLEMENTSACTIONLISTENERPUBLICVOIDACTIONPERFORMEDACTIONEVENTEJICUNQIJBUTTONEGETSOURCEVTADDJICUNQIYUNSK11/还原开关K1状态/STR1JGK21K31/还原开关K3状态K41/还原开关K4状态STR1JG/为7512517这种计算做准备/小数点CLASSJIANTING_XIAOSIMPLEMENTSACTIONLISTENERPUBLICVOIDACTIONPERFORMEDACTIONEVENTEJICUNQIJBUTTONEGETSOURCEVTADDJICUNQIIFK51STRINGSS2JBUTTONEGETSOURCEGETTEXTIFK11IFK31STR1“K51/还原开关K5状态STR1STR1SS2/K21K3K31/SYSTEMOUTPRINTLNSTR1JG_TEXTFIELDSETTEXTSTR1/显示ELSEIFK12IFK41STR2“K51/还原开关K5状态STR2STR2SS2/K22K4K41/测试/JG_TEXTFIELDSETTEXTSTR2K5K51/注册监听器JIANTING_DYJT_DYNEWJIANTING_DYJIANTINGJTNEWJIANTING/临听数字键JIANTING_FHJT_FHNEWJIANTING_FH/临听符号键JIANTING_CLEARJT_CNEWJIANTING_CLEAR/清除键JIANTING_XIAOSJT_XSNEWJIANTING_XIAOS/小数点键BUTTON7ADDACTIONLISTENERJTBUTTON8ADDACTIONLISTENERJTBUTTON9ADDACTIONLISTENERJTBUTTON_CHUADDACTIONLISTENERJT_FHBUTTON4ADDACTIONLISTENERJTBUTTON5ADDACTIONLISTENERJTBUTTON6ADDACTIONLISTENERJTBUTTON_CHENGADDACTIONLISTENERJT_FHBUTTON1ADDACTIONLISTENERJTBUTTON2ADDACTIONLISTENERJTBUTTON3ADDACTIONLISTENERJTBUTTON_JIANADDACTIONLISTENERJT_FHBUTTON0ADDACTIONLISTENERJTBUTTON_DIANADDACTIONLISTENERJT_XSBUTTON_DYADDACTIONLISTENERJT_DYBUTTON_JIAADDACTIONLISTENERJT_FHCLEAR_BUTTONADDACTIONLISTENERJT_C/关闭事件处理程序FRAMEADDWINDOWLISTENERNEWWINDOWADAPTERPUBLICVOIDWINDOWCLOSINGWINDOWEVENTESYSTEMEXIT0/计算PUBLICVOIDYUNSDOUBLEA2/运算数1DOUBLEB2/运算数2STRINGCFH/运算符DOUBLEJG20/结果IFCEQUALS“/SYSTEMOUTPRINTLN“请输入运算符“JG_TEXTFIELDSETTEXT“请输入运算符“ELSESYSTEMOUTPRINTLN“STR1“STR1/调试时使用SYSTEMOUTPRINTLN“STR2“STR2/调试时使用SYSTEMOUTPRINTLN“运算符“FH/调试时使用IFSTR1EQUALS“/字符串“转换成DOUBLE型数据时会出错所以手工转STR1“00“IFSTR2EQUALS“STR2“00“A2DOUBLEVALUEOFSTR1DOUBLEVALUEB2DOUBLEVALUEOFSTR2DOUBLEVALUESYSTEMOUTPRINTLN“DOUBLE型的A2“A2/调试时使用SYSTEMOU