Deployment of LINUX--JDK

1. Check the JDK version in the system

[Java] view plaincopy

1. $>java-version

Java Version "1.7.0_"
OpenJDK Runtime Environment (IcedTea6 1.11.1) (rhel-1.45.1.11.1.el6-x86_64)
OpenJDK 64-bit Server VM (build 20.0-b12, Mixed mode)

2. Detecting JDK installation Packages

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1. $>rpm-qa | grep java

Avapackages-tools-3.4.1-6.el7_0.noarch
Tzdata-java-2014i-1.el7.noarch
java-1.7.0-openjdk-headless-1.7.0.71-2.5.3.1.el7_0.x86_64
java-1.7.0-openjdk-1.7.0.71-2.5.3.1.el7_0.x86_64
Python-javapackages-3.4.1-6.el7_0.noarch

3. Uninstalling OPENJDK

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2. $>rpm-e--nodeps tzdata-java-2014i- 1 . El7.noarch

3. $>RPM-E--nodeps java-1.7.0-openjdk-headless-1.7.0.71-2.5.3.1. el7_0.x86_64

4. $>RPM-E--nodeps java-1.7.0-openjdk-1.7.0.71-2.5.3.1. el7_0.x86_64

4. Install the new jdk1.8.0_31

Decompression tar.gz

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1. $>mkdir-p/USR/LIB/JVM

2. $>TAR-ZXVF Jdk1. 8 . 0_31.tar.gz-c/USR/LIB/JVM

5. Setting Environment variables

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1. $> Vi/etc/profile

Added at the end:

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2. export JAVA_HOME=/USR/LIB/JVM/JDK1. 8 . 0_31

4. Export JRE_HOME=${JAVA_HOME}/JRE

6. Export Classpath=.:${java_home}/lib:${jre_home}/lib

8. Export Path=${java_home}/bin: $PATH

6. Executive Profile

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1. $>source/etc/profile

7. Check for newly installed JDK

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1. $>java-version

This article is from the "Mr_computer" blog, make sure to keep this source http://caochun.blog.51cto.com/4497308/1757432

Deployment of LINUX--JDK