How to set system parameters and runtime parameters in Java?

1 year ago

Liam

1 minute

In Java, you can use the setProperty() method of the System class to set system parameters, for example:

System.setProperty("key", "value");

You can use the getProperty() method of the System class to retrieve system parameters, for example:

String value = System.getProperty("key");

You can specify runtime parameters using the “-D” option in the command line, for example:

java -Dkey=value Main

In Java code, you can use the getProperty() method of the System class to retrieve runtime parameters, for example:

String value = System.getProperty("key");