matrix +sum java

package max;

public class matrtix {

    public static void main(String[] args) {
        System.out.println("hello world ");
        int sum=0;
        int a[][]={{1,1,0},{1,1,1},{2,2,2}};
        int b[][]={{1,1,0},{1,1,1},{2,0,2}};
        int i,j;
        int c[][]=new int[3][3];
        for(i=0;i<3;i++)
        {for(j=0;j<3;j++)
        {System.out.print((a[i][j]+b[i][j])+" ");
        }

        System.out.println();}

int sum_first_number=sum(10);

for( i=0;i<10;i++)
{   sum+=i;
System.out.println("the current value is"+i);
}
System.out.println("the value of sum"+sum);}
public static int sum(int a,int b)
{return a+b;}
public static int sum(int n)
{int sum=0;
for(int i=0;i<10;i++)
{sum+=i;}
return sum;
}

}