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public class Test {
public static void main(String aa[]) {
if (System.getProperty("os.name").equals("Linux")) {
System.out.println("linux");
} else if (System.getProperty("os.name").equals("Windows XP")) {
System.out.println("windows");
}
}
}

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import java.awt.event.*;
import javax.swing.*;
public class Terris extends JFrame implements Runnable, KeyListener {
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