容易误用的 Boolean.getBoolean

getBoolean

public static boolean getBoolean(String name)

Returns true if and only if the system property named by the argument exists and is equal to the string "true". (Beginning with version 1.0.2 of the Java^TM platform, the test of this string is case insensitive.) A system property is accessible through getProperty, a method defined by the System class.

If there is no property with the specified name, or if the specified name is empty or null, then false is returned.

Parameters:

name - the system property name.

Returns:

the boolean value of the system property.

See Also:

System.getProperty(java.lang.String), System.getProperty(java.lang.String, java.lang.String)