Sum of Numbers of Matrix Diagonally in Java

First Way

class MatDiagSum{
	public static void main(String args[]){
		
		int size = 6;
		int mat[][] = new int[size][size];
		
		// input ints in matrix
		
		for(int i=0;i(size-1)){
					break;
				}
			}
			
			System.out.println("Sum of " + (size+i) + " diag is " + sum);
			nexti = size-1;
			nextj = i+2;
			sum=0;
		}
	}
}

Second Way

class MatDiagSumOtherSide{
	public static void main(String args[]){
		
		int size = 6;
		int mat[][] = new int[size][size];
		
		// input ints in matrix
		
		for(int i=0;i-1;i--){
			for(int j=0;j(size-1)) {
					break;
				}
				
			}
			
			System.out.println("Sum of " + (size-i) + " diag is " + sum);
			nexti=0;
			nextj=i-1;
			sum=0;
		}
		
		// lets do remaining half-1
			nexti = 1; 
			nextj = 0;
		for(int i=0; i(size-1)){
					break;
				}
			}
			
			System.out.println("Sum of " + (size+i) + " diag is " + sum);
			nexti = i+2;
			nextj = 0;
			sum=0;
		}
	}
}