Package com.privatejgoodies.common.base

Class SystemUtils

  • public class SystemUtils
extends java.lang.Object
    Provides convenience behavior to determine the operating system and Java version.
    Author:
    Karsten Lentzsch

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected SystemUtils()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      protected static java.lang.String getSystemProperty​(java.lang.String key)
      Tries to look up the System property for the given key.
      protected static boolean startsWith​(java.lang.String str, java.lang.String prefix)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • OS_NAME

        protected static final java.lang.String OS_NAME
        The os.name System Property. Operating system name.

        Defaults to null, if the runtime does not have security access to read this property or the property does not exist.

      • OS_VERSION

        protected static final java.lang.String OS_VERSION
        The os.version System Property. Operating system version.

        Defaults to null, if the runtime does not have security access to read this property or the property does not exist.

      • JAVA_VERSION

        protected static final java.lang.String JAVA_VERSION
        The os.name System Property. Operating system name.

        Defaults to null, if the runtime does not have security access to read this property or the property does not exist.

      • IS_OS_LINUX

        public static final boolean IS_OS_LINUX
        Is true if this is Linux.

      • IS_OS_MAC

        public static final boolean IS_OS_MAC
        True if this is the Mac OS.

      • IS_OS_SOLARIS

        public static final boolean IS_OS_SOLARIS
        True if this is Solaris.

      • IS_OS_WINDOWS

        public static final boolean IS_OS_WINDOWS
        True if this is Windows.

      • IS_OS_WINDOWS_98

        public static final boolean IS_OS_WINDOWS_98
        True if this is Windows 98.

      • IS_OS_WINDOWS_ME

        public static final boolean IS_OS_WINDOWS_ME
        True if this is Windows ME.

      • IS_OS_WINDOWS_2000

        public static final boolean IS_OS_WINDOWS_2000
        True if this is Windows 2000.

      • IS_OS_WINDOWS_XP

        public static final boolean IS_OS_WINDOWS_XP
        True if this is Windows XP.

      • IS_OS_WINDOWS_VISTA

        public static final boolean IS_OS_WINDOWS_VISTA
        True if this is Windows Vista or Server 2008.

      • IS_OS_WINDOWS_7

        public static final boolean IS_OS_WINDOWS_7
        True if this is Windows 7.

      • IS_OS_WINDOWS_8

        public static final boolean IS_OS_WINDOWS_8
        True if this is Windows 8.

      • IS_OS_WINDOWS_6_OR_LATER

        public static final boolean IS_OS_WINDOWS_6_OR_LATER
        True if this is Windows Vista/Server 2008/7/2008 R2/8.

      • IS_JAVA_6

        public static final boolean IS_JAVA_6
        True if this is Java 6. We check for a prefix of 1.6.

      • IS_JAVA_7

        public static final boolean IS_JAVA_7
        True if this is Java 7. We check for a prefix of 1.7.

      • IS_JAVA_7_OR_LATER

        public static final boolean IS_JAVA_7_OR_LATER
        True if this is Java 7.x or later. We check that it's not 1.6.

      • IS_JAVA_8

        public static final boolean IS_JAVA_8
        True if this is Java 7. We check for a prefix of 1.7.
        Since:
        1.6

      • IS_JAVA_8_OR_LATER

        public static final boolean IS_JAVA_8_OR_LATER
        True if this is Java 8.x or later. We check that it's neither 1.6 nor 1.7.
        Since:
        1.6

      • HAS_MODERN_RASTERIZER

        public static final boolean HAS_MODERN_RASTERIZER
        True since Java 6 update 10.
        Since:
        1.2

      • IS_LAF_WINDOWS_XP_ENABLED

        public static final boolean IS_LAF_WINDOWS_XP_ENABLED
        True if the Windows XP Look&Feel is enabled.
        Since:
        1.2

      • IS_LOW_RESOLUTION

        public static final boolean IS_LOW_RESOLUTION
        Is true if this environment's default toolkit reports a screen resolution below 120 dpi.

        Since:
        1.2

    • Constructor Detail

      • SystemUtils

        protected SystemUtils()

    • Method Detail

      • getSystemProperty

        protected static java.lang.String getSystemProperty​(java.lang.String key)
        Tries to look up the System property for the given key. In untrusted environments this may throw a SecurityException. In this case we catch the exception and answer an empty string.
        Parameters:
        key - the name of the system property
        Returns:
        the system property's String value, or null if there's no such value, or an empty String when a SecurityException has been caught

      • startsWith

        protected static boolean startsWith​(java.lang.String str,
                                    java.lang.String prefix)