org.springframework.core

Class JdkVersion

java.lang.Object

org.springframework.core.JdkVersion

public abstract class JdkVersion
extends java.lang.Object

Internal helper class used to find the Java/JVM version that Spring is operating on, to allow for automatically adapting to the present platform's capabilities.

Note that Spring requires JVM 1.6 or higher, as of Spring 4.0.

Author:

Rod Johnson, Juergen Hoeller, Rick Evans, Sam Brannen

Field Summary

Fields

Modifier and Type	Field and Description
static int	JAVA_13 Constant identifying the 1.3.x JVM (JDK 1.3).
static int	JAVA_14 Constant identifying the 1.4.x JVM (J2SE 1.4).
static int	JAVA_15 Constant identifying the 1.5 JVM (Java 5).
static int	JAVA_16 Constant identifying the 1.6 JVM (Java 6).
static int	JAVA_17 Constant identifying the 1.7 JVM (Java 7).
static int	JAVA_18 Constant identifying the 1.8 JVM (Java 8).
static int	JAVA_19 Constant identifying the 1.9 JVM (Java 9).
private static java.lang.String	javaVersion
private static int	majorJavaVersion

Constructor Summary

Constructors

Constructor and Description
JdkVersion()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	getJavaVersion() Return the full Java version string, as returned by System.getProperty("java.version").
static int	getMajorJavaVersion() Get the major version code.

Methods inherited from class java.lang.Object

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

Field Detail

JAVA_13

public static final int JAVA_13

Constant identifying the 1.3.x JVM (JDK 1.3).

See Also:

Constant Field Values

JAVA_14

public static final int JAVA_14

Constant identifying the 1.4.x JVM (J2SE 1.4).

See Also:

Constant Field Values

JAVA_15

public static final int JAVA_15

Constant identifying the 1.5 JVM (Java 5).

See Also:

Constant Field Values

JAVA_16

public static final int JAVA_16

Constant identifying the 1.6 JVM (Java 6).

See Also:

Constant Field Values

JAVA_17

public static final int JAVA_17

Constant identifying the 1.7 JVM (Java 7).

See Also:

Constant Field Values

JAVA_18

public static final int JAVA_18

Constant identifying the 1.8 JVM (Java 8).

See Also:

Constant Field Values

JAVA_19

public static final int JAVA_19

Constant identifying the 1.9 JVM (Java 9).

See Also:

Constant Field Values

javaVersion

private static final java.lang.String javaVersion

majorJavaVersion

private static final int majorJavaVersion

Constructor Detail

JdkVersion

public JdkVersion()

Method Detail

getJavaVersion

public static java.lang.String getJavaVersion()

Return the full Java version string, as returned by System.getProperty("java.version").

Returns:

the full Java version string

See Also:

System.getProperty(String)

getMajorJavaVersion

public static int getMajorJavaVersion()

Get the major version code. This means we can do things like if (getMajorJavaVersion() >= JAVA_17).

Returns:

a code comparable to the JAVA_XX codes in this class

See Also:

JAVA_16, JAVA_17, JAVA_18, JAVA_19