Java Data Type Questions

1.What is output of below program

public class First { int i; public static void main(String[] args) { System.out.println(i); } }

2.What is output of below program

public class First { int i; public static void main(String[] args) { int i; System.out.println(i); } }

3.What is output of below program

public class First { int i; static int i; public static void main(String[] args) { System.out.println(i); } }

4.What is output of below program

public class First { int i=100; static int j=i; public static void main(String[] args) { System.out.println(j); } }

5.What is output of below program

public class First { int i=100; static int j=10; public static void main(String[] args) { int k=i+j; System.out.println(k); } }

6.What is output of below program

public class First { public static void main(String[] args) { int i; System.out.println(i); } }

7.What is output of below program

public class First { public static void main(String[] args) { int i=10,k; System.out.println(k); } }

8.What is output of below program

public class First { public static void main(String[] args) { int i,k=10; System.out.println(i); } }

9.What is output of below program

public class First { static{ System.out.println(i); } static int i=109; public static void main(String[] args) { } }

10.What is output of below program

public class First { int i=10; static{ System.out.println(i); } public static void main(String[] args) { } }

11.What is output of below program

public class First { { System.out.println(i); } public static void main(String[] args) { } int i=10; }

12.What is output of below program

public class First { public static void main(String[] args) { int i=10; System.out.println(i++); } } <textarea> <p> 13.What is output of below program</p> <textarea > public class First { public static void main(String[] args) { int i=10; System.out.println(++i); } }

14.What is output of below program

public class First { public static void main(String[] args) { int i=10; System.out.println(++i+i++); } }

15.What is output of below program

public class First { public static void main(String[] args) { int i=10; System.out.println(++i+"i++"); } }

16.What is output of below program

public class First { public static void main(String[] args) { int i=1; char c=1; System.out.println(i+c); } }

17.What is output of below program

public class First { public static void main(String[] args) { int i=1; char c=1+1; System.out.println(i+c); } }

18.What is output of below program

public class First { public static void main(String[] args) { int i=1; char c=1+i; System.out.println(i+c); } }

19.What is output of below program

public class First { public static void main(String[] args) { byte a=1; byte b=1; byte c=a+b; System.out.println(c); } }

20.What is output of below program

public class First { public static void main(String[] args) { byte a=1; byte b=1; byte c=(byte)a+(byte)b; System.out.println(c); } }

21.What is output of below program

public class First { public static void main(String[] args) { byte a=1; byte b=1; byte c=(byte)(a+b); System.out.println(c); } }

22.What is output of below program

public class First { public static void main(String[] args) { byte a=1; byte b=1; short c=a+b; System.out.println(c); } }

23.What is output of below program

public class First { public static void main(String[] args) { byte a=1; char b=1; short c=a+b; System.out.println(c); } }

24.What is output of below program

public class First { public static void main(String[] args) { char a='a'; char b='b'; int k=a+b; System.out.println(k); } }

25.What is output of below program

public class First { static float i=10.0; public static void main(String[] args) { System.out.println(f); } }

26.What is output of below program

public class First { public static void main(String[] args) { int i=10; Float b=i; System.out.println(b); } }

27.What is output of below program

public class First { public static void main(String[] args) { int i=10; Long b=i; System.out.println(b); } }

28.What is output of below program

public class First { public static void main(String[] args) { Long i=10; System.out.println(i); } }

29.What is output of below program

public class First { public static void main(String[] args) { Double i=10.9f; System.out.println(i); } }

30.What is output of below program

public class First { public static void main(String[] args) { Integer i=null; int k=i; System.out.println(k); } }

31.What is output of below program

public class First { static int i; static Integer j; public static void main(String[] args) { System.out.println(i+j); } }

32.What is output of below program

public class First { static int i = 10; static { i++; } { i++; } First() { i++; } static void get() { i++; } public static void main(String[] args) { new First(); System.out.println(i); } }

33.What is output of below program

public class First { public static void main(String[] args) { int i=1010; System.out.println(i); } }

34.What is output of below program

public class First { public static void main(String[] args) { int i=0101; System.out.println(i); } }

35.What is output of below program

public class First { public static void main(String[] args) { char c=0101; System.out.println(c); } }

36.What is output of below program

public class First { public static void main(String[] args) { char a=0101; char b=101; char c=a+b; System.out.println(c); } }

37.What is output of below program

public class First { public static void main(String[] args) { int i = 5_6; System.out.println(i); } }

38.What is output of below program

public class First { public static void main(String[] args) { int i = 0x1a; System.out.println(i); } }

39.What is output of below program

public class First { public static void main(String[] args) { int i = 0b11010; System.out.println(i); } }

40.What is output of below program

public class First { public static void main(String[] args) { int i = 0x5a; int k=10; System.out.println(i+k); } }

41.What is output of below program

public class First { public static void main(String[] args) { System.out.println(9|8); } }

42.What is output of below program

public class First { public static void main(String[] args) { System.out.println(9&8); } }

43.What is output of below program

public class First { public static void main(String[] args) { int i=19; i= i>>2; System.out.println(i); } }

44.What is output of below program

public class First { public static void main(String[] args) { int i=19; i=i<<2; System.out.println(i); } }

45.What is output of below program

public class First { public static void main(String[] args) { int i=10; char j=10; System.out.println(i==j); } }

46.What is output of below program

public class First { public static void main(String[] args) { int i=97; char j='a'; System.out.println(i==j); } }

47.What is output of below program

public class First { public static void main(String[] args) { int i=(Integer)null; char j='a'; System.out.println(i==j); } }

48.What is output of below program

public class First { public static void main(String[] args) { Integer i=null; char j='a'; System.out.println(i==j); } }

49.What is output of below program

public class First { public static void main(String[] args) { Integer i=null; Character j='a'; System.out.println(i==j); } }

50.What is output of below program

public class First { public static void main(String[] args) { Integer i=97; Character j='a'; System.out.println(i+j); } }