$1.$ Write a program to demonstrate the sum of arrays in Java.

Given array elements are: $15,20,25,30$

$2.$ Write a Java program to search for element $10$ from in the given list

$(5,9,10,25,40)$ using Linear Search technique.

$3.$ Write a Java program to sort the given list of elements $(78,45,21,33,55)$ using Selection sort.

$4.$ Write a Java program to display any $5$ primitive data types in Java.

$5.$ Write a Java Program to demonstrate an array based implementation of stack and its

operations.