Java Boolean 1

What is the default value of a boolean data type in Java?

• `true`

• `false`

• `0`

• `null`

Which of the following is a logical operator in Java?

• `+`

• `&&`

• `=`

• `++`

Consider the following code snippet: `boolean result = (5 > 3) && (8 < 10);`. What is the value of `result`?

• `true`

• `false`

• `null`

• `undefined`

Which of the following statements correctly uses a conditional statement with a boolean expression in Java?

• `if (x = 5) { }`

• `if (x == 5) { }`

• `if (x : 5) { }`

• `if (x => 5) { }`

Evaluate the following expression: `true || false && false`. What is the result?

• `true`

• `false`

• `null`

• `undefined`

What is short-circuit evaluation in Java?

• Evaluating all parts of a boolean expression

• Stopping evaluation as soon as the result is determined

• Evaluating expressions in reverse order

• Ignoring boolean expressions

Given the expression `false && (5 / 0 > 1)`, what will be the result and why?

• `true`, because division by zero is ignored

• `false`, because short-circuit evaluation prevents division by zero

• `ArithmeticException`, because division by zero occurs

• `undefined`, because the expression is invalid

Construct a truth table for the logical AND operator. What is the result when both operands are `true`?

• `true`

• `false`

• `null`

• `undefined`

Which of the following boolean expressions is syntactically correct in Java?

• `boolean x = (5 > 3)`

• `boolean x = 5 > 3`

• `boolean x = 5 < 3`

• All of the above

Analyze the following code: `boolean x = true; boolean y = false; boolean z = x || y && !x;`. What is the value of `z`?

• `true`

• `false`

• `null`

• `undefined`