do with java simple calculators, jcreator development environment. Please correct me criticism. .

caculator for java
..................\cal.exe
..................\calculator2
..................\...........\cal.jar
..................\...........\Calculator.jcd
..................\...........\Calculator.jcp
..................\...........\Calculator.jcu
..................\...........\Calculator.jcw
..................\...........\Calculator2.jcd
..................\...........\Calculator2.jcu
..................\...........\Calculator2.jcw
..................\...........\myprojects
..................\...........\..........\calculator
..................\...........\..........\..........\Calculation.class
..................\...........\..........\..........\Calculator.class
..................\...........\..........\..........\CalculatorFrame$1.class
..................\...........\..........\..........\CalculatorFrame$2.class
..................\...........\..........\..........\CalculatorFrame$3.class
..................\...........\..........\..........\CalculatorFrame.class
..................\...........\..........\..........\JButtons$1.class
..................\...........\..........\..........\JButtons.class
..................\...........\..........\..........\JButtons1$1.class
..................\...........\..........\..........\JButtons1.class
..................\...........\..........\..........\JButtons2$1.class
..................\...........\..........\..........\JButtons2.class
..................\...........\..........\..........\JButtons3$1.class
..................\...........\..........\..........\JButtons3.class
..................\...........\..........\..........\JButtons4$1.class
..................\...........\..........\..........\JButtons4.class
..................\...........\..........\..........\JButtons5.class
..................\...........\..........\..........\JDialog1$1.class
..................\...........\..........\..........\JDialog1.class
..................\...........\..........\..........\JLabels.class
..................\...........\..........\..........\Stackx.class
..................\...........\..........\..........\Stackx1.class
..................\...........\..........\..........\Stackx2.class
..................\...........\..........\..........\Statck$Stackpoint.class
..................\...........\..........\..........\Statck.class
..................\...........\..........\..........\Text.class
..................\...........\src
..................\...........\...\Calculation.java
..................\...........\...\Calculator.java
..................\...........\...\CalculatorFrame.java
..................\...........\...\error.log
..................\...........\...\JButtons.java
..................\...........\...\JButtons.java.bak
..................\...........\...\JButtons1.java
..................\...........\...\JButtons2.java
..................\...........\...\JButtons3.java
..................\...........\...\JButtons4.java
..................\...........\...\JButtons5.java
..................\...........\...\JDialog1.java
..................\...........\...\JLabels.java
..................\...........\...\Text.java
..................\...........\src_calculator.txt
..................\...........\计算器.bat
..................\jre
..................\...\bin
..................\...\...\ActPanel.dll
..................\...\...\agent.dll
..................\...\...\awt.dll
..................\...\...\beans.ocx
..................\...\...\classic
..................\...\...\.......\jvm.dll
..................\...\...\.......\Xusage.txt
..................\...\...\cmm.dll
..................\...\...\dcpr.dll
..................\...\...\dt_socket.dll
..................\...\...\fontmanager.dll
..................\...\...\hotspot
..................\...\...\.......\jvm.dll
..................\...\...\.......\Xusage.txt
..................\...\...\hpi.dll
..................\...\...\hprof.dll
..................\...\...\ioser12.dll
..................\...\...\java.dll
..................\...\...\java.exe
..................\...\...\javaw.exe
..................\...\...\jawt.dll
..................\...\...\jcov.dll
...............

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