Download java and java Official Website

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Author: User

Download java and java Official Website

1.-D <name >=< value> set a system property to set system properties.


The-cp parameter can be used when the java command introduces the jar, but the-cp cannot use wildcards (when there are multiple jar files, it is necessary to write them one by one, not *. jar). Generally, the jar files are in the same directory and there are more than one.

-Djava. ext. dirs

With this, you don't need to write one by one.


For example, java-Djava. ext. dirs = lib MainClass

In this way, you can simplify classpath settings.

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