當我跑步時java -version，我得到這個：
java version "1.8.0_101"
Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)
$JAVA_HOME設定為/usr/lib/jvm/java-8-oracle，每當我嘗試使用 刪除或安裝軟體包時apt-get，我都會在提示繼續後收到此訊息：
Setting up jre1.8.0-101 (1.8.0101-1) ...
Unpacking JAR files...
plugin.jar...
Error: Could not open input file: /usr/java/jre1.8.0_101/lib/plugin.pack
javaws.jar...
Error: Could not open input file: /usr/java/jre1.8.0_101/lib/javaws.pack
deploy.jar...
Error: Could not open input file: /usr/java/jre1.8.0_101/lib/deploy.pack
rt.jar...
Error: Could not open input file: /usr/java/jre1.8.0_101/lib/rt.pack
jsse.jar...
Error: Could not open input file: /usr/java/jre1.8.0_101/lib/jsse.pack
charsets.jar...
Error: Could not open input file: /usr/java/jre1.8.0_101/lib/charsets.pack
localedata.jar...
Error: Could not open input file: /usr/java/jre1.8.0_101/lib/ext/localedata.pack
update-alternatives: error: alternative ControlPanel can't be slave of java: it is a master alternative
dpkg: error processing package jre1.8.0-101 (--configure):
subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
jre1.8.0-101
E: Sub-process /usr/bin/dpkg returned an error code (1)
我的機器上安裝了 Java JRE（位於錯誤中顯示的目錄中）和 JDK，在研究 JRE 是 JDK 的子集之後，我意識到我可能不需要額外的 JRE。那麼上面指定的JRE是否需要呢？這些錯誤意味著什麼？
任何幫助，將不勝感激。
謝謝。