https://openjdk.java.net/ 
public interface javax.swing.WindowConstants
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.swing.WindowConstants
  super_class: java.lang.Object
{
  public static final int DO_NOTHING_ON_CLOSE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final int HIDE_ON_CLOSE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final int DISPOSE_ON_CLOSE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2

  public static final int EXIT_ON_CLOSE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 3
}
SourceFile: "WindowConstants.java"