Statement JDK 1.6)

Description

public class Statement

A Statement object represents a primitive statement in which a single method is applied to a target and a set of arguments - as in "a.setFoo(b)".

A Statement object represents a primitive statement
in which a single method is applied to a target and
a set of arguments - as in "a.setFoo(b)".
Note that where this example uses names
to denote the target and its argument, a statement
object does not require a name space and is constructed with
the values themselves.
The statement object associates the named method
with its environment as a simple set of values:
the target and an array of argument values.

See also:

Constructors

public Statement (Object target, String methodName, Object arguments)

Creates a new Statement object with a target, methodName and arguments as per the parameters.

Creates a new Statement object with a target,
methodName and arguments as per the parameters.
Parameters:
- target - The target of this statement.
- methodName - The methodName of this statement.
- arguments - The arguments of this statement. If null then an empty array will be used.

Methods

Hide/Show inherited methods

public void execute () throws Exception

The execute method finds a method whose name is the same as the methodName property, and invokes the method on the target.

The execute method finds a method whose name is the same as the methodName property, and invokes the method on the target. When the target's class defines many methods with the given name the implementation should choose the most specific method using the algorithm specified in the Java Language Specification (15.11). The dynamic class of the target and arguments are used in place of the compile-time type information and, like the java.lang.reflect.Method class itself, conversion between primitive values and their associated wrapper classes is handled internally.

The following method types are handled as special cases:

Static methods may be called by using a class object as the target.
The reserved method name "new" may be used to call a class's constructor as if all classes defined static "new" methods. Constructor invocations are typically considered Expressions rather than Statements as they return a value.
The method names "get" and "set" defined in the java.util.List interface may also be applied to array instances, mapping to the static methods of the same name in the Array class.

public Object getArguments ()

Returns the arguments of this statement.

public String getMethodName ()

Returns the name of the method.

public Object getTarget ()

Returns the target of this statement.

pack-private String instanceName (Object instance)

pack-private Object invoke () throws Exception

public String toString ()

Prints the value of this statement using a Java-style syntax.