org.apache.maven.surefire.booter

Class SystemUtils

java.lang.Object

org.apache.maven.surefire.booter.SystemUtils

public final class SystemUtils
extends Object

JDK 9 support.

Since:

2.20.1

Author:

Tibor Digana (tibor17)

Field Summary

Fields

Modifier and Type	Field and Description
static BigDecimal	JAVA_SPECIFICATION_VERSION

Method Summary

Modifier and Type	Method and Description
static boolean	endsWithJavaPath(String jvmExecPath)
static boolean	isBuiltInJava7AtLeast()
static boolean	isBuiltInJava9AtLeast()
static boolean	isJava9AtLeast(BigDecimal version)
static boolean	isJava9AtLeast(String jvmExecutablePath)
static Long	pid()
static ClassLoader	platformClassLoader()
static File	toJdkHomeFromJre() If system property java.home is /jdk (since jdk9) or /jdk/jre (prior to jdk9) then the absolute path to JDK home is returned /jdk.
static File	toJdkHomeFromJvmExec(String jvmExecutable) If jvmExecutable is /jdk/bin/java (since jdk9) or /jdk/jre/bin/java (prior to jdk9) then the absolute path to JDK home is returned /jdk.
static BigDecimal	toJdkVersionFromReleaseFile(File jdkHome)

Methods inherited from class java.lang.Object

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

Field Detail

JAVA_SPECIFICATION_VERSION

public static final BigDecimal JAVA_SPECIFICATION_VERSION

Method Detail

endsWithJavaPath

public static boolean endsWithJavaPath(String jvmExecPath)

Parameters:

jvmExecPath - e.g. /jdk/bin/java, /jdk/jre/bin/java

Returns:

true if jvmExecPath is path to java binary executor

toJdkHomeFromJvmExec

public static File toJdkHomeFromJvmExec(String jvmExecutable)

If jvmExecutable is /jdk/bin/java (since jdk9) or /jdk/jre/bin/java (prior to jdk9) then the absolute path to JDK home is returned /jdk.
Null is returned if jvmExecutable is incorrect.

Parameters:

jvmExecutable - /jdk/bin/java* or /jdk/jre/bin/java*

Returns:

path to jdk directory; or null if wrong path or directory layout of JDK installation.

toJdkHomeFromJre

public static File toJdkHomeFromJre()

If system property java.home is /jdk (since jdk9) or /jdk/jre (prior to jdk9) then the absolute path to JDK home is returned /jdk.

Returns:

path to JDK

toJdkVersionFromReleaseFile

public static BigDecimal toJdkVersionFromReleaseFile(File jdkHome)

isJava9AtLeast

public static boolean isJava9AtLeast(String jvmExecutablePath)

isBuiltInJava9AtLeast

public static boolean isBuiltInJava9AtLeast()

isBuiltInJava7AtLeast

public static boolean isBuiltInJava7AtLeast()

isJava9AtLeast

public static boolean isJava9AtLeast(BigDecimal version)

platformClassLoader

public static ClassLoader platformClassLoader()

pid

public static Long pid()