Java 错误-在ubuntu中安装JDK1.8

我尝试安装jdk 8，但它仍然可以与jdk 7一起使用。以下是产出：

sudo更新替代方案——config javac

There is 1 choice for the alternative javac (providing /usr/bin/javac).

  Selection    Path                                 Priority   Status
------------------------------------------------------------
  0            /opt/java-oracle/jdk1.8.0/bin/javac   1         auto mode
* 1            /opt/java-oracle/jdk1.8.0/bin/javac   1         manual mode

sudo更新替代方案——配置java

There is 1 choice for the alternative java (providing /usr/bin/java).

  Selection    Path                                Priority   Status
------------------------------------------------------------
  0            /opt/java-oracle/jdk1.8.0/bin/java   1         auto mode
* 1            /opt/java-oracle/jdk1.8.0/bin/java   1         manual mode

javac版本

Error: could not find libjava.so
Error: Could not find Java SE Runtime Environment.

java版本

java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)

如果你能帮我一个忙。

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谢谢：）

参考下面的链接，我的工作正常&我安装了JDK 8参考链接

我认为您错过了javac的更新选项

update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.8*/bin/javac 1065

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这个问题更适合superuser.com imho，投票结束。