How to call Java function from string stored in a Variable [duplicate]
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27-09-2019 - |
문제
Possible Duplicate:
Calling a method named “string” at runtime in Java and C
I need to be able to call a function, but the function name is stored in a variable, is this possible. e.g:
public void foo ()
{
//code here
}
public void bar ()
{
//code here
}
String functionName = "foo";
// i need to call the function based on what is functionName
Anyhelp would be great, thanks
해결책
Yes, you can, using reflection. However, consider also Effective Java 2nd Edition, Item 53: Prefer interfaces to reflection. If at all possible, use interfaces instead. Reflection is rarely truly needed in general application code.
See also
Related questions
다른 팁
Use reflection.
Here's an example
With the reflection API. Something like this:
Method method = getClass().getDeclaredMethod(functionName);
method.invoke(this);
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