External Interfaces |
Invoking Static Methods on Java Classes
To invoke a static
method on a Java class, use the Java invocation syntax
For example, call the isNaN
static method on the java.lang.Double
class.
Alternatively, you can apply static method names to instances of a class. In this example, the isNaN
static method is referenced in relation to the dblObject
instance of the java.lang.Double
class.
Several of the programming examples in this chapter contain examples of static method invocation. For example, the code for Communicating Through a Serial Port contains a call to static method getPortIdentifier
on Java class javax.comm.CommPortIdentifier
.
Using the javaMethod Function on Static Methods
The javaMethod
function was introduced in section Using the javaMethod Function on Nonstatic Methods. You can also use this function to call static methods.
The following syntax invokes the static method, method_name
, in class, class_name
, with the argument list that matches x1,...,xn
. This returns the value X
.
For example, to call the static isNaN
method of the java.lang.Double
class on a double value of 2.2, you use
Using the javaMethod
function to call static methods enables you to:
namelengthmax
function to obtain the maximum identifier length.)
Invoking Methods on Java Objects | Obtaining Information About Methods |
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