Description: Design a simple Swing-based calculator for integer arithmetic operations. 1. The top of the text box, the north (BorderLayout.North) belongs container located below the operator for the number buttons and buttons in a JPanel, using a grid layout, located in the south belongs to the Panel container (BorderLayout.South) .
2 Enter both data in the text box, press the add/subtract/multiply/divide button to perform the corresponding operation of these two numbers, and outputs the results to a text box (to be completed by ActionEvent event handler).
3 C button is used for the contents of the text box is cleared.
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File list (Check if you may need any files):
calculator\.classpath
..........\.project
..........\.settings\org.eclipse.jdt.core.prefs
..........\bin\exper\Component.class
..........\...\.....\exper4.class
..........\...\.....\MyCommandListener.class
..........\...\.....\ReaderListen.class
..........\src\exper\Component.java
..........\...\.....\exper4.java
..........\...\.....\MyCommandListener.java
..........\...\.....\ReaderListen.java
..........\bin\exper
..........\src\exper
..........\.settings
..........\bin
..........\src
calculator
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