Complete the code: with JAVA language

public class Test {

public static void main(String[] args) {

int i = 4; int j = 5;

// Fill in the code to invoke the sum method and display the sum of i and j.

}

public static int sum(int i, int j) {

// Fill in the code here to return the sum of i and j.

}

}

b. (3 pts) Complete the code:

public class Test {

public static void main(String[] args) {

int i = 4; int j = 5;

// Fill in the code to invoke the printSum method to display the sum of i and j.

}

public static void printSum(int i, int j) {

// Fill in the code here to display the sum of i and j.

}

}