在
cmd下直接输入:
java会有完整的说明:
E:\>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.
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
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
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions正常情况下是什么都不需要的,
直接
java hello
就可以了当哪天程序运行不顺当了,就可以利用这个帮助,看看有没有可以在这里解决的,
比如说吧,你需要知道你现在java的版本
就运行
java -version
其他情况复杂了,建议遇到再学,反正我是记不住那么多的
cmd下直接输入:
java会有完整的说明:
E:\>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.
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
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
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions正常情况下是什么都不需要的,
直接
java hello
就可以了当哪天程序运行不顺当了,就可以利用这个帮助,看看有没有可以在这里解决的,
比如说吧,你需要知道你现在java的版本
就运行
java -version
其他情况复杂了,建议遇到再学,反正我是记不住那么多的
我写了一个JNDI的程序
部分代码如下
...
javax.naming.InitialContext ctx = new javax.naming.InitialContext();
System.out.println(ctx.getNameInNamespace());
...
java -Djava.naming.factory.initial=com.sun.jndi.fscontext.RefFSContextFactory -Djava.naming.provider.url=file:d:\ ..
运行时遇到上述参数所以想探戈究竟,能具体讲讲吗?(在JBuilder下运行某些程序时在监视栏里有时会看到比这更长个设置)