C:\>javap -c Main.class
Compiled from "Main.java"
public class com.genuineflix.src.Main {
  public static final int CONSTANT_INT;

  public static final java.lang.Integer CONSTANT_INTEGER;

  static {};
    Code:
       0: bipush        16
       2: invokestatic  #14                 // Method java/lang/Integer.valueOf:(I)Ljava/lang/Integer;
       5: putstatic     #20                 // Field CONSTANT_INTEGER:Ljava/lang/Integer;
       8: return

  public com.genuineflix.src.Main();
    Code:
       0: aload_0
       1: invokespecial #25                 // Method java/lang/Object."<init>":()V
       4: return

  public static void main(java.lang.String[]);
    Code:
       0: getstatic     #31                 // Field java/lang/System.out:Ljava/io/PrintStream;
       3: bipush        16
       5: invokevirtual #37                 // Method java/io/PrintStream.println:(I)V
       8: getstatic     #31                 // Field java/lang/System.out:Ljava/io/PrintStream;
      11: getstatic     #20                 // Field CONSTANT_INTEGER:Ljava/lang/Integer;
      14: invokevirtual #43                 // Method java/io/PrintStream.println:(Ljava/lang/Object;)V
      17: return
}


Source:
package com.genuineflix.src;

public class Main {

    public static final int CONSTANT_INT = 16;
    public static final Integer CONSTANT_INTEGER = 16;

    public static void main(String[] args) {
        System.out.println(CONSTANT_INT);
        System.out.println(CONSTANT_INTEGER);
    }
}