Access issues from a static context in Java

A static method (context) cannot directly access instance members (variable and method) of a class. It can only access the static members directly.

public class Test {
   private int i;
   private static int j;
   
   public void m1() {
      System.out.println("Inside method m1");
   }

   public static void m2() {
      System.out.println("Inside method m2");
   }

   public static void m3() {
      j = 3;
      m2();         // can access static members

      Test t = new Test();
      t.i = 4;      // can access instance members
      t.m1();       // indirectly (on a reference)


      i = 3;        // cannot access instance members
      m1();         // directly - will not compile
   } 
}