linux下java.io.IOException: Cannot run program "/opt/jdk/jre/bin/java": error=13, Permission denied

linux下启动jetty时报：

[root@mv01 jetty-distribution-9.2.14.v20151106]# java -jar start.jar 
java.io.IOException: Cannot run program "/opt/jdk/jre/bin/java": error=13, Permission denied
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1041)
at org.eclipse.jetty.start.Main.start(Main.java:787)
at org.eclipse.jetty.start.Main.main(Main.java:112)
Caused by: java.io.IOException: error=13, Permission denied
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:135)
at java.lang.ProcessImpl.start(ProcessImpl.java:130)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1022)
... 2 more

Usage: java -jar start.jar [options] [properties] [configs]
java -jar start.jar --help # for more information

java.io.IOException: Cannot run program "/opt/jdk/jre/bin/java": error=13, Permission denied

Permission denied已经提示很清楚了，没有权限,解决方法:

   执行命令： chmod 777 /opt/jdk/jre/bin/java