I do not know how to solve this, please help me with explanations

package com.codegym.task.task02.task0205; /* Pay raise */ public class Solution { public static void main(String[] args) { hackSalary(7000); } public static void hackSalary(int a) { //write your code here int a = System.out.println(Your salary is: <a+1000> dollars per month."); } }