Call Methods in Sequence

问题

I have 5 different methods like this

public void met1(){}
public void met2(){}
public void met3(){}
public void met4(){}
public void met5(){}

I want to call this method from 1 to 5 is there any convinient way to do this.

I don't want to call one by one or I don't want to put method call inside other method.

How Can I do this??

回答1:

Have you looked into fluent design patterns? http://www.javacodegeeks.com/2013/01/fluent-object-creation.html

Example would be something like this:

myObject.met1().met2().met3().met4().met5().result();

回答2:

I believe you could do it with reflection with something like:

YourClass classInstance = new YourClass();

for (int i = 1; i < 6; i++) {
    Method yourMethod = YourClass.class.getMethod("met" + i);

    method.invoke(instance);
}

Haven't tested it out, so no guarantees.

回答3:

You could do this with reflection as other answers have previously mentioned. Reflection is generally avoided if possible.

In reality the most common design pattern to address your concern would be Chain of Responsibility.
http://en.wikipedia.org/wiki/Chain-of-responsibility_pattern

回答4:

The only way to call methods by name is through reflection. See this article for how to do this:

How do I invoke a Java method when given the method name as a string?

Something like this should work:

 for (int i = 1; i < 6; i++){
      java.lang.reflect.Method method; 
      try {
           method = this.getClass().getMethod("met" + i);
           method.invoke(this);
      } catch (SecurityException e) {
           // ...
      } catch (NoSuchMethodException e) {
           // ...
      }
 }

来源：https://stackoverflow.com/questions/22514947/call-methods-in-sequence

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java

methods