1) Addition of two one dimensional arrays in java

class AddTwoArrayClass{

	public static void main(String[] args){

		// Declaration and initialization of  array
		int a[] = {1,2,3,4,5};
		int b[] = {6,7,8,9,10};

		// Instantiation of third array to store results
		int c[] = new int[5];

		for(int i=0; i<5; ++i){
			// add two array and result store in third array
			c[i] = a[i] + b[i];

			//Display results
			System.out.println("Enter sum of "+i +"index" +" " + c[i]);
		}
	}
}

Output

D:\Java Articles>java AddTwoArrayClass
Enter sum of 0index 7
Enter sum of 1index 9
Enter sum of 2index 11
Enter sum of 3index 13
Enter sum of 4index 15

2) Addition of two two dimensional arrays in java

class AddTwoArrayOf2DClass{
	public static void main(String[] args){
		// Declaration and initialization of  2D array 
		int a[][] = {{1,2,3},{4,5,6}};
		int b[][] = {{7,8,9},{10,11,12}};

		// Instantiation of third array to store results
		int c[][] = new int[2][3];

		for(int i=0; i<2; ++i){
			for(int j=0; j<3; ++j){
				// add two array and result store in third array
				c[i][j] = a[i][j] + b[i][j];
				System.out.println("Enter sum of "+i + " " + j +"index" +" " + c[i][j]);
			}
		}
	}
}

Output

D:\Java Articles>java AddTwoArrayOf2DClass
Enter sum of 0 0index 8
Enter sum of 0 1index 10
Enter sum of 0 2index 12
Enter sum of 1 0index 14
Enter sum of 1 1index 16
Enter sum of 1 2index 18