CENTOS7 JDK8 Installation Configuration

First, preparatory work

Uninstall the default installed OPENJDK

1. Find the OpenJDK to uninstall

[Root@localhost ~]$ Rpm-qa | grep OpenJDK | grep-v grep

java-1.7.0-openjdk-1.7.0.75-2.5.4.2.el7_0.x86_64

Java-1.6.0-openjdk-devel-1.6.0.34-1.13.6.1.el7_0.x86_64

2. Uninstall sequentially

Rpm-e–nodeps java-1.7.0-openjdk-1.7.0.75-2.5.4.2.el7_0.x86_64

Rpm-e–nodeps Java-1.6.0-openjdk-devel-1.6.0.34-1.13.6.1.el7_0.x86_64

Note: Insufficient permissions, please use the SU root right to reuse.

Download JDK 8 Click to open link

Second, install the configuration JDK8

1. Extract and install JDK files

TAR-ZXVF jdk-8u60-linux-x64.tar.gz

mkdir/usr/java

mv jdk-8u60-linux-x64  /usr/java/jdk1.8.0_60

2. Configure JDK8

Edit/etc/profile File

Add at end of/etc/profile file

Export java_home=/usr/java/jdk1.8.0_60

export classpath=.: $JAVA _home/jre/lib/rt.jar: $JAVA _home/lib/dt.jar:$ Java_home/lib/tools.jar

export path= $PATH: $JAVA _home/bin

Note: The delimiter between paths cannot be used; (semicolon), to use: (colon)

Use the Source/etc/profile command to reload the/etc/profile file so that the modified content takes effect in the current shell window. (permanently in effect, reboot the system or log off the user)

Third, the test is installed successfully

Java-version

java Version "1.8.0_60"
Java (tm) SE Runtime Environment (build 1.8.0_60-b27)
Java HotSpot (tm) 64-bit Server VM (build 25.60-b23, Mixed mode)

Complete.