Test 2

Which of the following is the correct way to declare an array in Java?

• int arr[] = new int[5];
• int arr = new int[5];
• array arr[5];
• int arr() = new int[5];

What will be the output of: System.out.println(10 + 20 + "Java");

• 30Java
• Java30
• 1020Java
• Java1020

Which keyword is used to inherit a class in Java?

• implements
• extends
• inherit
• super

Which operator is used to compare two values in Java?

• equals
• double equal
• !=
• slash

How to find the length of a string in Java?

• str.length
• str.len()
• str.length()
• length(str)

What is the default value of an int variable in Java?

• 0
• null
• undefined
• 1

Which of the following is NOT a primitive data type in Java?

• int
• boolean
• String
• double

What will be the output of: System.out.println("Java".toUpperCase());

• JAVA
• java
• Java
• Error

Which type of variable is declared inside a class but outside methods?

• Local
• Instance
• Static
• Global

Which keyword is used to refer to the parent class constructor?

• super
• this
• parent
• base