PreTest - JAVA

What is the size of int in Java?

• 2 bytes
• 4 bytes
• 8 bytes
• Depends on OS

Which of the following is not a Java keyword?

• static
• Integer
• void
• new

What will 10 / 3 return in Java?

• 3.333
• 3
• 0
• 3.0

Which access modifier makes a member visible to all classes?

• protected
• private
• default
• public

Which of these is not a primitive type?

• int
• float
• String
• boolean

What is the default value of a boolean variable?

• true
• false
• 0
• null

Which loop is guaranteed to execute at least once?

• for
• while
• do-while
• foreach

What is the use of 'this' keyword?

• Refers to the superclass
• Refers to current class object
• Declares a class
• None of these

What is returned by System.out.println("5" + 3);?

• 8
• 53
• Error
• None

Java uses __ for memory management.

• Pointers
• Manual deletion
• Garbage Collection
• Destructors