Java Basics Assessment

What is the default value of a boolean variable in Java?

• null

• 1

• true

• false

Which data type is used to store a single character in Java?

• char

• string

• boolean

• int

What is the output of the following code: int x = 5; System.out.println(x + 2);?

• 10

• 8

• 6

• 7

How do you declare a variable in Java?

• To declare a variable in Java, use the syntax: dataType variableName; or dataType variableName = value;

• variableName dataType;

• dataType: variableName;

• var variableName = value;

What is the purpose of the 'if' statement in Java?

• To execute code conditionally based on a boolean expression.

• To declare a class in Java.

• To create a loop in Java.

• To define a variable in Java.

Which control flow statement allows you to execute a block of code multiple times?

• If statement

• Loop

• Function call

• Switch statement

What is the result of the expression: 10 > 5 && 5 < 3?

• 5 < 3

• false

• 5 > 10

• true

How do you create a constant variable in Java?

• Use the 'final' keyword to declare a constant variable.

• Use the 'const' keyword to declare a constant variable.

• Use the 'static' keyword to create a constant variable.

• Declare a variable without any keyword to make it constant.

What is the output of the following code: for(int i = 0; i < 3; i++) { System.out.print(i); }?

• 123

• 01

• 012

• 0123

What keyword is used to define a method in Java?

• function

• method

• define

• void