Booleans

Booleans

üSize is 1 bit – two value: true and false.

üThis type is returned by all relational operators.

üExample:

  boolean b;

  b= true;

System.out.println(“b is “+b);

System.out.println(“10>9 is “ +(10>9));

Output:

b is true

10>9 is true

Literals

üInteger Literals

  1. base 10 – 1,2,43 etc.

  2. base 8 – octal values are denoted in java by a leading 0.

  3. base 16 – hexadecimal values are denoted by leading 0x    or 0X.

}Any whole number is by default integer (32 bits).

}To specify a long literal, the number should appended with

  an upper- or lowercase L.

üFloating point Literals

  1. Standard Notation – 3.14159, 0.6667, 2.0 etc.

  2. Scientific Notation – 6.022E23, 2e+100.

}Floating point literals are by default of type double.

}To specify a float literal, we must append an F or f to the constant.

üBoolean Literals

}Two values – true and false.

}True is not equal 1 and false is not equal to 0.

}They can be assigned to variable declared as boolean.

üCharacter Literals:

}A literal character is represented inside a pair of single quotes.

üString Literals

}A sequence of characters between a pair of double quotes.

}In java string must begin and end on the same line.