1. public class Alpha1 { 
 2. public static void main( String[] args ) { 
 3. boolean flag; int i=0; 
 5. do { 
 6. flag = false; 
 7. System.out.println( i++ ); 
 8. flag = i < 10; 
 9. continue; 
 10. } while ( (flag)? true:false ); 
 11. } 
 12. }  

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 1. package foo; 
 2. 
 3. import java.util.Vector; 
 4. 
 5. protected class MyVector Vector { 
 6. init i = 1; 
 7. public MyVector() { 
 8. i = 2; 
 9. } 
 10. } 
 11. 
 12. public class MyNewVector extends MyVector { 
 13. public MyNewVector() { 
 14. i = 4; 
 15. } 
 16. public static void main(String args[]) { 
 17. MyVector v = new MyNewVector(); 
 18. } 
 19. }  

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 1. class Super { 
 2. public Integer getLenght() { return new Integer(4); } 
 3. } 
 4. 
 5. public class Sub extends Super { 
 6. public Long GetLenght() { return new Long(5); } 
 7. 
 8. public static void main(String[] args) { 
 9. Super sooper = new Super(); 
 10. Sub sub = new Sub(); 
 11. System.out.println( 
 12. sooper.getLenght().toString() + “,” + 
 13. sub.getLenght().toString() ); 
 14. } 
 15. }  

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 10. public Object m() { 
 11. Object o = new Float(3.14F); 
 12. Object [] oa = new Object[1]; 
 13. oa[0] = o; 
 14. o = null; 
 15. return oa[0]; 
 16. }  

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 1. class Base { 
 2. Base() { System.out.print(“Base”); } 
 3. } 
 4. public class Alpha extends Base { 
 5. public static void main( String[] args ) { 
 6. new Alpha(); 
 7. new Base(); 
 8. } 
 9. }  

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 11. int i = 1,j = -1; 
 12. switch (i) { 
 13. case 0, 1:j = 1; 
 14. case 2: j = 2; 
 15. default; j = 0; 
 16. } 
 17. System.out.println(“j=”+j);  

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 1. public class X { 
 2. public static void main(String [] args) { 
 3. try { 
 4. badMethod(); 
 5. System.out.print(“A”); 
 6. } 
 7. catch (Exception ex) { 
 8. System.out.print(“B”); 
 9. } 
 10. finally { 
 11. System.out.print(“C”); 
 12. } 
 13. System.out.print(“D”); 
 14. } 
 15. public static void badMethod() {} 
 17. }  

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 11. Float f = new Float(“12”); 
 12. switch (f) { 
 13. case 12: System.out.println(“Twelve”); 
 14. case 0: System.out.println(“Zero”); 
 15. default: System.out.println(“Default”); 
 16. }  

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