请检查以下场景：
sudo update-alternatives --config java
There are 5 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
0 /usr/lib/jvm/java-7-openjdk-i386/jre/bin/java 1071 auto mode
1 /opt/java/jdk1.8.0_25/bin/java 1 manual mode
* 2 /usr/lib/jvm/java-1.8.25-i386/bin/java 1 manual mode
3 /usr/lib/jvm/java-1.8.25-i386/bin/javac 1 manual mode
4 /usr/lib/jvm/java-1.8.25-i386/bin/javaws 1 manual mode
5 /usr/lib/jvm/java-7-openjdk-i386/jre/bin/java 1071 manual mode
echo $JAVA_HOME
/opt/java/jdk1.8.0_25/bin/java
好吧，真的是一团糟！！我需要从一开始就彻底清理和删除所有东西！
我试过
sudo update-alternatives --remove "java" "/opt/java/jdk1.8.0_25-i386/bin/java"
但上面显示的表格保持不变！！
请帮帮我！！！！