public class testforju {

static secondjulia ju2 = new secondjulia();

public static void main(String [] args){

int[][] array = ju2.CalculateTotalETforJulia();

for(int row=0;row<array.length;row++){

for(int col=0; col<array[0].length;col++){

 

System.out.println(array[row][col]);

 

}

}}

 

}

ju2 is a class, and ju2.CalculateTotalETforJulia() returns a 2d int array. When I call this method in  another class, if don't use any loop and just print it, I can get the correct answer. But when I try to use nest for loop to print this array, the output will be all "0". So my question is why this thing happen and how to solve it.