Lets explore Java

Which of the below is valid way to instantiate an array in java?

• int myArray [] = {1, 3, 5};

• int [] myArray = {“1”, “2”, “3”};

• int myArray [] [] = {1,2,3,4};

• int [] myArray = (5, 4, 3);

Which of the below are reserved keyword in Java?

• Array

• goto

• null

• None of the above

What are the valid statements for static keyword in Java?

• We can have static block in a class.

• The static block in a class is executed every time an object of class is created.

• We can have static method implementations in interface.

• We can define static block inside a method.

What is correct syntax for main method of a java class?

• public static int main(String[] args)

• public int main(String[] args)

• public static void main(String[] args)

• None of the above.

Which of the following is not a Java features?

• Dynamic

• Architecture Neutral

• Use of pointers

• Object-oriented

Which is the correct way of writing println() function in Java?

• System.out.println("Message = " + variable);

• System.println("Message = " + variable);

• System.output.println("Message = " + variable);

• System.println.out("Message = " + variable);

What is a correct difference between print() and println()?

• print() prints the output and move to new line, println() prints the output and stays on same line

• print() prints the output and stays on same line, println() prints the output and move to new line

• None of the given

• Both of the given

Which of the following are built-in packages in Java? Select TWO correct answers.

• util

• stdio

• io

• out

Which statement is use to add / link packages in our program?

 

• add

• import

• include

• link

What is meaning * in import statement?

• To import selected classes from a package

• To import all classes from a package

• To import all classes from a package and multiply it