Description: For the button to register the listener, there are two ways, one is by an anonymous inner class
To Search:
File list (Check if you may need any files):
Project2
........\.classpath
........\.project
........\.settings
........\.........\org.eclipse.jdt.core.prefs
........\bin
........\...\a
........\...\.\Swing1$1.class
........\...\.\Swing1.class
........\...\.\Swing2.class
........\...\.\Swing3.class
........\src
........\...\a
........\...\.\Swing1.java
........\...\.\Swing2.java
........\...\.\Swing3.java