Java 1.0

1.Write a Java program which takes marks of six subject as input and give average marks as output.

2.You have to make calculator which performs addition, subtraction, multiplication and division on two numbers when input 1, 2, 3 or 4  respectively is given. 

3.Write a Java program to find whether a input number is even or odd.

4.Write a Java program to Swap Numbers without using 3rd variable.

5.Write a Java program to find whether a number is  Armstrong or not (strictly for 3-digit numbers).

HELP: An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. For example, 371 is an Armstrong number since 3**3 + 7**3 + 1**3 = 371.