The role and use of System.getproperty () in Java

Java provides us with the System.getproperty () function, which can obtain some parameters of the Java JVM and the operating system, which can be used for program judgment and so on.

The System.getproperty () method needs to pass a string argument, which indicates that the environment configuration needs to be obtained.

The parameters that can be passed are:

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2. <span style="font-size:18px" >system.getproperty ("java.vm.version"); Java Virtual machine version
4. System.getproperty ("Java.vendor.url"); //java official website
6. System.getproperty ("Java.vm.nam"); //java Virtual machine name
8. System.getproperty ("User.country"); //Country or region
10. System.getproperty ("User.dir"); //path of the project
12. System.getproperty ("java.runtime.version"); Java Runtime Environment version
14. System.getproperty ("Os.arch"); //Operating system bits (32 or up)
16. System.getproperty ("Os.name"); //operating system name
18. System.getproperty ("sun.jnu.encoding"); //encoding format
20. System.getproperty ("os.version"); //Operating system version
22. System.getproperty ("java.version"); //java version version </span>

In addition, you can pass a lot of parameters, not listed here, you can directly use

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1. System.getproperties (). List (System.out);

This code gets all the keys and values.

The role and use of System.getproperty () in Java