SystemUtils

java.lang.Object
- com.jgoodies.common.base.SystemUtils

```
public class SystemUtils
extends java.lang.Object
```
Provides convenience behavior to determine the operating system and Java version.

Field Summary

Fields
Modifier and Type	Field and Description
`private static java.lang.String`	`AWT_UTILITIES_CLASS_NAME`
`static boolean`	`HAS_MODERN_RASTERIZER` True since Java 6 update 10.
`static boolean`	`IS_JAVA_6` True if this is Java 6.
`static boolean`	`IS_JAVA_7` True if this is Java 7.
`static boolean`	`IS_JAVA_7_OR_LATER` True if this is Java 7.x or later.
`static boolean`	`IS_JAVA_8` True if this is Java 7.
`static boolean`	`IS_JAVA_8_OR_LATER` True if this is Java 8.x or later.
`static boolean`	`IS_LAF_WINDOWS_XP_ENABLED` True if the Windows XP Look&Feel is enabled.
`static boolean`	`IS_LOW_RESOLUTION` Is true if this environment's default toolkit reports a screen resolution below 120 dpi.
`static boolean`	`IS_OS_LINUX` Is true if this is Linux.
`static boolean`	`IS_OS_MAC` True if this is the Mac OS.
`static boolean`	`IS_OS_SOLARIS` True if this is Solaris.
`static boolean`	`IS_OS_WINDOWS` True if this is Windows.
`static boolean`	`IS_OS_WINDOWS_2000` True if this is Windows 2000.
`static boolean`	`IS_OS_WINDOWS_6_OR_LATER` True if this is one of: Windows Vista, Windows Server 2008, Windows Server 2008 R2, Windows 7, Windows Server 2012, Windows 8, Windows Server 2012 R2, Windows 8.1
`static boolean`	`IS_OS_WINDOWS_7` True if this is Windows 7.
`static boolean`	`IS_OS_WINDOWS_8` True if this is Windows 8 or Windows Server 2012.
`static boolean`	`IS_OS_WINDOWS_98` True if this is Windows 98.
`static boolean`	`IS_OS_WINDOWS_ME` True if this is Windows ME.
`static boolean`	`IS_OS_WINDOWS_VISTA` True if this is Windows Vista or Server 2008.
`static boolean`	`IS_OS_WINDOWS_XP` True if this is Windows XP.
`static boolean`	`IS_OS_WINDOWS_XP_64_BIT_OR_SERVER_2003` True if this is Windows XP 64-Bit edition or Windows Server 2003 or Windows Server 2003 R2.
`protected static java.lang.String`	`JAVA_VERSION` The `os.name` System Property.
`protected static java.lang.String`	`OS_NAME` The `os.name` System Property.
`protected static java.lang.String`	`OS_VERSION` The `os.version` System Property.

Constructor Summary

Constructors
Modifier Constructor and Description

protected SystemUtils()

Constructors
Modifier	Constructor and Description
`protected`	`SystemUtils()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`protected static java.lang.String`	`getSystemProperty(java.lang.String key)` Tries to look up the System property for the given key.
`private static boolean`	`hasModernRasterizer()` Checks and answers whether this Java runtime has a modern rasterizer or not.
`static boolean`	`isLafAqua()` Checks and answers whether an Aqua look&feel is active.
`private static boolean`	`isLowResolution()`
`private static boolean`	`isWindowsXPLafEnabled()` Checks and answers whether the Windows XP style is enabled.
`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_XP_64_BIT_OR_SERVER_2003
```
public static final boolean IS_OS_WINDOWS_XP_64_BIT_OR_SERVER_2003
```
    True if this is Windows XP 64-Bit edition or Windows Server 2003 or Windows Server 2003 R2.
    
    Since:
    
    1.8
  - 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 or Windows Server 2012.
  - IS_OS_WINDOWS_6_OR_LATER
```
public static final boolean IS_OS_WINDOWS_6_OR_LATER
```
    True if this is one of: Windows Vista, Windows Server 2008, Windows Server 2008 R2, Windows 7, Windows Server 2012, Windows 8, Windows Server 2012 R2, Windows 8.1
  - 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
  - AWT_UTILITIES_CLASS_NAME
```
private static final java.lang.String AWT_UTILITIES_CLASS_NAME
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - SystemUtils
```
protected SystemUtils()
```
- Method Detail
  - isLafAqua
```
public static boolean isLafAqua()
```
    Checks and answers whether an Aqua look&feel is active. This may be Apple's Aqua L&f, or a sub-L&f that uses the same ID, because it doesn't substantially change the look.
    
    Returns:
    
    true if the current look&feel is Aqua-like
    
    Since:
    
    1.8
  - 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)
```
  - hasModernRasterizer
```
private static boolean hasModernRasterizer()
```
    Checks and answers whether this Java runtime has a modern rasterizer or not. More precisely this method aims to understand whether a good or poor rasterizer is used. Sun's Java runtime has improved its rasterizer in the 1.6 N series after build 12.
    
    Returns:
    
    true if the AWTUtilities class is available, false if this class is not in the class path.
  - isWindowsXPLafEnabled
```
private static boolean isWindowsXPLafEnabled()
```
    Checks and answers whether the Windows XP style is enabled. This method is intended to be called only if a Windows look&feel is about to be installed or already active in the UIManager. The XP style of the Windows look&feel is enabled by default on Windows XP platforms since the J2SE 1.4.2; it can be disabled either in the Windows desktop as well as in the Java runtime by setting a System property.
    First checks the platform, platform version and Java version. Then checks whether the desktop property win.xpstyle.themeActive is set or not.
    
    Returns:
    
    true if the Windows XP style is enabled
  - isLowResolution
```
private static boolean isLowResolution()
```

Class SystemUtils

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

OS_NAME

OS_VERSION

JAVA_VERSION

IS_OS_LINUX

IS_OS_MAC

IS_OS_SOLARIS

IS_OS_WINDOWS

IS_OS_WINDOWS_98

IS_OS_WINDOWS_ME

IS_OS_WINDOWS_2000

IS_OS_WINDOWS_XP

IS_OS_WINDOWS_XP_64_BIT_OR_SERVER_2003

IS_OS_WINDOWS_VISTA

IS_OS_WINDOWS_7

IS_OS_WINDOWS_8

IS_OS_WINDOWS_6_OR_LATER

IS_JAVA_6

IS_JAVA_7

IS_JAVA_7_OR_LATER

IS_JAVA_8

IS_JAVA_8_OR_LATER

HAS_MODERN_RASTERIZER

IS_LAF_WINDOWS_XP_ENABLED

IS_LOW_RESOLUTION

AWT_UTILITIES_CLASS_NAME

Constructor Detail

SystemUtils

Method Detail

isLafAqua

getSystemProperty

startsWith

hasModernRasterizer

isWindowsXPLafEnabled

isLowResolution