# cd /usr/
# chmod +x
# ./



引数 -version を付けて起動する。

# cd /usr/j2re1.4.2_06/bin
# ./java -version
java version "1.4.2_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_06-b03)
Java HotSpot(TM) Client VM (build 1.4.2_06-b03, mixed mode)


引数に -v を付けて起動して、「おかしいなー。なぜ起動しないんだ?」と思ったバカな自分でした。

# ./java -v
Unrecognized option: -v
Could not create the Java virtual machine.

 つい、--version や -v を引数に付けてしまうクセができてしまっていました。うぅぅ。


単純に、java を起動すればオプションを説明してくれるんですね。

$ cd /usr/j2re1.4.2_06/bin/
$ ./java
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)

where options include:
-client to select the "client" VM
-server to select the "server" VM
-hotspot is a synonym for the "client" VM [deprecated]
The default VM is client.

-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A : separated list of directories, JAR archives,
and ZIP archives to search for class files.
set a system property
enable verbose output
-version print product version and exit
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -jre-no-restrict-search
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
enable assertions
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions