Added code for matrix sub

java/matrix/matrixSub.java

@@ -0,0 +1,18 @@
+public class MatrixSubExample{  
+public static void main(String args[]){  
+//creating two matrices    
+int a[][]={{1,3,4},{2,4,3},{3,4,5}};    
+int b[][]={{1,3,4},{2,4,3},{1,2,4}};    
+
+//creating another matrix to store the difference of two matrices    
+int c[][]=new int[3][3];  //3 rows and 3 columns  
+
+//Subtracting and printing addition of 2 matrices    
+for(int i=0;i<3;i++){    
+for(int j=0;j<3;j++){    
+c[i][j]=a[i][j]-b[i][j];    //use - for subtraction  
+System.out.print(c[i][j]+" ");    
+}    
+System.out.println();//new line    
+}    
+}}