File	Doc	Category	Size	Date	Package
MethodTrap.java	API Doc	phoneME MR2 API (J2ME)	3742	Wed May 02 17:59:54 BST 2007	com.sun.cldchi.jvm

MethodTrap

• java.lang.Object

Fields Summary
public static final int	ACTION_CALLBACK Invoke callback function
public static final int	ACTION_EXIT Causes JVM to stop
public static final int	ACTION_STOP_ISOLATE Causes current isolate to stop
public static final int	ACTION_BREAKPOINT Causes native breakpoint to happen

Constructors Summary

Methods Summary
public static native void	releaseTrap(int trapHandle) Release Java method that was previously trapped by setTrap() call. param trapHandle - the identifier of the trap that was returned by previous call to setTrap() or setJavaTrap()
public static native int	setJavaTrap(java.lang.String methodName, java.lang.String handlerName) Replace the execution entry of the specified method with the execution entry of another method with the similar signature. param methodName - fully-qualified name of the method to trap, looks like package.ClassName.methodName param handlerName - fully-qualified name of the method to be invoked instead of the trapped method. The handler must have the same parameter types as the original method.
public static native int	setTrap(java.lang.String methodName, int callCount, int action, int targetTask) Trap specified Java method for JVM to take special action before the method is invoked. param methodName - fully-qualified name of the method to trap, looks like package.ClassName.methodName param callCount - take an action only when the method is called callCount times param action - the code of the action for JVM to take on the method invocation, can be one of ACTION_* param targetTask - id of a task that should be stopped on the method call, method with the same from other tasks won't be trapped. 0 means any task will match return trapHandle - unique identifier of the trap that can be passed to subsequent repeaseTrap() call