Java Boolean Statements

What is the purpose of boolean statements in Java?

• To perform arithmetic calculations

• To compare values and determine their relationship

• To print output on the console

• To create loops and iterations

Which operator is used to check if two values are equal in Java?

• ==

• <=

• >=

• >

What is the output of the following boolean expression in Java:

System.out.println(6 > 3) ?

• true

• false

What is the output of the following boolean expression in Java: !(4 == 4)?

• true

• false

How would you write a boolean expression to check if a variable "age" is greater than or equal to 18 in Java?

• age >= 18

• age <= 18

• age == 18

• age > 18

How would you write an if-else statement in Java to check if a number is positive or negative?

• if (num >= 0)

  { "+"

  }

  else { "-"

  }

• if (num <= 0)

  { "+"

  }

  else { "-"

  }

• if (num == 0)

  {"+"

  }

  else { "-"

  }

• if (num < 0)

  { "+"

  }

  else { "-"

  }

What is the correct way to declare a boolean variable in Java?

• boolean isTrue = 1;

• boolean isTrue = 'true';

• boolean isTrue = true;

• boolean isTrue = '1';

What is the output of the following boolean expression in Java:
System.out.println(5 != 5) ?

• true

• false

Determine the output of the following program at the various points indicated below.

int x = 5;

double y = 2.34;

if( x % 2 == 0 ) {

System.out.println( x + “ is even.” );

}

else {

System.out.println( x + “ is odd.” );

}

• 5 is even.

• 5 is odd.

• Error, it won't run.

• 5 is neither of these.

What will be the output of this code segment?

• The program will output 'category 1'
• The program will output 'category 2'
• The program will not output anything
• The program will output 'Mike'