linux-t16c:/regression # cd /regression/test/javax/swing/JInternalFrame/4251301 linux-t16c:/regression/test/javax/swing/JInternalFrame/4251301 # /regression/jdk1.7.0_71/bin/javac *.java bug4251301.java:35: warning: OSInfo is internal proprietary API and may be removed in a future release import sun.awt.OSInfo; ^ bug4251301.java:36: warning: SunToolkit is internal proprietary API and may be removed in a future release import sun.awt.SunToolkit; ^ bug4251301.java:40: warning: SunToolkit is internal proprietary API and may be removed in a future release private static final SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit(); ^ bug4251301.java:40: warning: SunToolkit is internal proprietary API and may be removed in a future release private static final SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit(); ^ bug4251301.java:43: warning: OSInfo is internal proprietary API and may be removed in a future release if (OSInfo.getOSType() == OSInfo.OSType.MACOSX) { ^ bug4251301.java:43: warning: OSInfo is internal proprietary API and may be removed in a future release if (OSInfo.getOSType() == OSInfo.OSType.MACOSX) { ^ 6 warnings