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package ibees.qq;
import java.awt.BorderLayout;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
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public class TestAbstract {
int count;
public void operation(){
System.out.println("count = " + (++count));
}
}
public class Test extends TestAbstract {
public static void main(String[] args) {
Test test = new Test();
TestAbstract testAb = new TestAbstract();
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