工作中要畫(huà)些簡(jiǎn)單的思維導(dǎo)圖，于是就安裝了 FreeMind告嘲，不料它竟然給我報(bào)錯(cuò)：
$ freemind
[warning] /usr/bin/freemind: No java runtime was found
[error] /usr/bin/freemind: Unable to find an appropriate java runtime. See java_wrappers(7) for help
去查查報(bào)錯(cuò)原因，vim /usr/bin/freemind：
151 if [ -r /usr/lib/java-wrappers/java-wrappers.sh ]
152 then # the Debian method
153 . /usr/lib/java-wrappers/java-wrappers.sh
154 require_java_runtime java6
從 151 ～ 154 行可知 freemind 想要 Java 6 奖地。
記得當(dāng)時(shí)裝了 6 7 8 三個(gè)版本的 Java橄唬，確認(rèn)一下：
$ update-alternatives --config java
There are 3 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------------------
0 /usr/lib/jvm/java-8-oracle/jre/bin/java 8 auto mode
1 /usr/lib/jvm/java-6-oracle/jre/bin/java 1 manual mode
* 2 /usr/lib/jvm/java-7-oracle/jre/bin/java 7 manual mode
3 /usr/lib/jvm/java-8-oracle/jre/bin/java 8 manual mode
Press enter to keep the current choice[*], or type selection number:
可知 Java 6 的目錄為 /usr/lib/jvm/java-6-oracle 。
接下來(lái)改改配置：
$ sudo cp /usr/lib/java-wrappers/java-wrappers.sh /usr/lib/java-wrappers/java-wrappers.sh.freemind
$ sudo chmod 755 /usr/lib/java-wrappers/java-wrappers.sh.freemind
$ sudo vim /usr/lib/java-wrappers/java-wrappers.sh.freemind参歹，把第 99 行 # DIRS="" 修改為 DIRS="/usr/lib/jvm/java-6-oracle"轧坎。
$ sudo vim /usr/bin/freemind，把 java-wrappers.sh 替換為 java-wrappers.sh.freemind泽示。替換后顯示如下：
151 if [ -r /usr/lib/java-wrappers/java-wrappers.sh.freemind ]
152 then # the Debian method
153 . /usr/lib/java-wrappers/java-wrappers.sh.freemind
154 require_java_runtime java6
修改完畢缸血，再次啟動(dòng) FreeMind 一切都好了。
