1. JDK8

# [下载地址](http://download.oracle.com/otn-pub/java/jdk/8u111-b14/jdk-8u111-linux-x64.tar.gz)

$ cd /Downloads
$ tar -zxvf jdk-8u101-linux-x64.tar.gz 

# 配置环境变量
$ sudo gedit /etc/profile
# 在文件末尾添加以下内容:
export JAVA_HOME=/home/lt/Java/jdk1.8.0_101(你的Jdk目录)
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

# 更新文件
$ source /etc/profile

2. eclipse

# [eclipse安装器下载](https://www.eclipse.org/downloads/download.php?file=/oomph/epp/neon/R/eclipse-inst-linux64.tar.gz)
# 解压
$ tar -zxcf eclipse-inst-linux64.tar.gz 
# 进入解后目录下,双击eclipse.inst运行安装程序

3. Tomcat9

# [下载地址](http://tomcat.apache.org/download-90.cgi)
$ cd Downloads/
$ unzip apache-tomcat-9.0.0.M9.zip 
# 配置环境变量CATLINA:
export CATLINA_HOME=/home/lt/Java/apache-tomcat-9.0.0.M9
$ sourse /etc/profile
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