Java.lang.System.setProperty () Method instance

Source: Internet
Author: User

  The Java.lang.System.setProperty () method sets the system properties specified by the specified key.



The following is a declaration of the Java.lang.System.setProperty () method

Public static string setProperty(string key, string value) 
    • Key--This is the name of the system property.

    • Value--is the values of the system properties.

return value

This method returns the value before the system property, or null if it does not have one.

    • SecurityException--If the security manager exists and its Checkpermission method does not allow the setting of the specified property.

    • NullPointerException--If the key or value is null.

    • IllegalArgumentException--If the key is empty.

Java.lang.System.setProperty () Method instance

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