Question
Which of the following lines will compile without warning or error.
1) float f=1.3;
2) char c="a";
3) byte b=257;
4) boolean b=null;
5) int i=10;
Answers
5) int i=10;
explanation:
1) float f=1.3;
Will not compile because the default type of a number with a floating point component is a double. This would compile with a cast as in float f=(float) 1.3
2) char c="a";
Will not compile because a char (16 bit unsigned integer) must be defined with single quotes. This would compile if it were in the form char c='a';
3) byte b=257;
Will not compile because a byte is eight bits. Take of one bit for the sign component you can define numbers between -127 to +127
4) a boolean value can either be true of false, null is not allowed.   Your Comment




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