从java.home查找Mac和Linux上的Jre文件

Question

I was able to invoke Java from within Java on Windows from (java.home)/bin/java. But I tried the same code on a Mac, and it didn't work. I presume it wouldn't work on Linux either. What file within java.home do I need to invoke to launch java on Mac and Linux?

Answer 1

same command to invoke java "java" . But first verify that java is installed in your Mac or Linux. Use following command and see what you get

user@ubuntu:~$ which java
/usr/bin/java
user@ubuntu:~$ ll /usr/bin/java
lrwxrwxrwx 1 root root 22 Jul 26 21:54 /usr/bin/java -> /etc/alternatives/java*
user@ubuntu:~$ ll /etc/alternatives/java
lrwxrwxrwx 1 root root 30 Aug 15 12:43 /etc/alternatives/java -> /usr/lib/jvm/jdk1.7.0/bin/java*

Answer 2

You just need to invoke java . There is no need to type anything in front of it.

By the way, there is no need to type anything in front of java on Windows either. You can set your PATH environment variable to point to your java.home directory.