一、根据业务需要，需要安装一个 Java 环境（ jdk _1.6.22版本）

 下载URL:

需要注册账号，否则不允许你下载。。。  

二、安装步骤

 unzip jdk-6u22-linux-x64.bin
cd jdk1.6.0_22 
ln -s /opt/lib/jdk  jdk1.6.0_22
[root@local-idc-l2f-oss-cst_call ~]# /opt/lib/jdk/bin/java -version
Error occurred during initialization of VM
java/ lang /NoClassDefFoundError: java/lang/Object
  

三、解决方法

 [root@demo jdk1.6.0_22]# find . -name '*.pack' 
./ jre /lib/ext/localedata.pack
./jre/lib/ rt .pack
./jre/lib/plugin.pack
./jre/lib/javaws.pack
./jre/lib/jsse.pack
./jre/lib/deploy.pack
./jre/lib/charsets.pack
./lib/tools.pack
解决问题
 /opt/lib/jdk/bin/unpack200 ./jre/lib/ext/localedata.pack  ./jre/lib/ext/localedata.jar
 /opt/lib/jdk/bin/unpack200 ./jre/lib/rt.pack  ./jre/lib/rt.jar
 /opt/lib/jdk/bin/unpack200 ./jre/lib/plugin.pack  ./jre/lib/plugin.jar
 /opt/lib/jdk/bin/unpack200 ./jre/lib/javaws.pack  ./jre/lib/javaws.jar
 /opt/lib/jdk/bin/unpack200 ./jre/lib/jsse.pack  ./jre/lib/jsse.jar
 /opt/lib/jdk/bin/unpack200 ./jre/lib/deploy.pack  ./jre/lib/deploy.jar
 /opt/lib/jdk/bin/unpack200 ./jre/lib/charsets.pack  ./jre/lib/charsets.jar
 /opt/lib/jdk/bin/unpack200 ./lib/tools.pack   ./lib/tools.jar  

建议：将随机数修改下配置

 修改$JAVA_HOME/jre/lib/security/java.security文件如下：
securerandom.source= file :/dev/urandom

为
securerandom.source=file:/dev/./urandom