Statement (GNU Classpath 0.94-pre Documentation)

A Statement captures the execution of an object method. It stores the object, the method to call, and the arguments to the method and provides the ability to execute the method on the object, using the provided arguments.

Since: 1.4

Constructor Summary
	Statement(Object target, String methodName, Object[] arguments) Constructs a statement representing the invocation of object.methodName(arg[0], arg[1], ...); If the argument array is null it is replaced with an array of zero length.

Method Summary
void	execute() Execute the statement.
Object[]	getArguments() Return the statement arguments.
String	getMethodName() Return the statement method name.
Object	getTarget() Return the statement object.
String	toString() Returns a string representation of this `Statement`.

Constructor Detail

Statement

Constructs a statement representing the invocation of object.methodName(arg[0], arg[1], ...);

If the argument array is null it is replaced with an array of zero length.

Parameters: target The object to invoke the method on. methodName The object method to invoke. arguments An array of arguments to pass to the method.

Method Detail

execute

Execute the statement.

Finds the specified method in the target object and calls it with the arguments given in the constructor.

The most specific method according to the JLS(15.11) is used when there are multiple methods with the same name.

Execute performs some special handling for methods and parameters:

Static methods can be executed by providing the class as a target.
The method name new is reserved to call the constructor new() will construct an object and return it. Not useful unless an expression :-)
If the target is an array, get and set as defined in java.util.List are recognized as valid methods and mapped to the methods of the same name in java.lang.reflect.Array.
The native datatype wrappers Boolean, Byte, Character, Double, Float, Integer, Long, and Short will map to methods that have native datatypes as parameters, in the same way as Method.invoke. However, these wrappers also select methods that actually take the wrapper type as an argument.

The Sun spec doesn't deal with overloading between int and Integer carefully. If there are two methods, one that takes an Integer and the other taking an int, the method chosen is not specified, and can depend on the order in which the methods are declared in the source file.

Throws: Exception if an exception occurs while locating or invoking the method.

getArguments

Return the statement arguments.

getMethodName

Return the statement method name.

getTarget

Return the statement object.

toString

Returns a string representation of this Statement.

Returns: A string representation of this Statement.

Class Statement