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Which of the following are legal lines of Java code?
  1. int w = (int)88

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Which of the following are legal lines of Java code?

  1. int w = (int)888.8;
  2. byte x = (byte)100L;
  3. long y = (byte)100;
  4. byte z = (byte)100L;

1 and 2
2 and 3
3 and 4
All statements are correct.

Answer : D
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1) What is the output of this program?

      class conversion      {
         public static void main(String args[])
          {
             double a = 295.04;
             int  b = 300;
             byte c = (byte) a;
             byte d = (byte) b;
             System.out.println(c + " "  + d);
         }
      }

38 43
39 44
295 300
295.04 300

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2) What is the error in this code?

      byte b = 50;
     b = b * 50;

b can not contain value 100, limited by its range.
* operator has converted b * 50 into int, which can not be converted to byte without casting.
b can not contain value 50.
No error in this code

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3) Which of the following are legal lines of Java code?

  1. int w = (int)888.8;
  2. byte x = (byte)100L;
  3. long y = (byte)100;
  4. byte z = (byte)100L;

1 and 2
2 and 3
3 and 4
All statements are correct.

View Answer

4) Which of the following automatic type conversion will be possible?

short to int
byte to int
int to long
long to int

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5) Which of these is necessary condition for automatic type conversion in Java?

The destination type is smaller than source type
The destination type is larger than source type
The destination type can be larger or smaller than source type
None of the mentioned

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