java如何使此方法可重用？

Question

我有两个类使用类似的方法：

method classA() {
    some variable initialization
    get this common interface In

    try {
        do something
        In.methodAA();

    catch () {
        do something
    }
}


method classB() {
    some variable initialization
    get this common interface In

    try {
        do something
        In.methodBB()

    catch () {
        do something 
    }
}

如果可能的话，我想在父类中放一个方法，因为主要的区别是在接口上调用的方法。如何实现这一点

我用的是java7

谢谢!

Answer 1

我将使用由a和B类实现的公共接口

interface Behaviour {
    void execute();
}

public class A implements Behaviour {
    @Override
    public void execute() {
        // do method A logic
    }
}

public class B implements Behaviour {
    @Override
    public void execute() {
        // do method B logic
    }

}

public class TemplateClass {
    private Behaviour behaviour;

    public TemplateClass(Behaviour behaviour) {
        this.behaviour = behaviour;
    }

    public void commonMethod() {
        try {
            // do something
            // ..

            // call specific logic
            behaviour.execute();
        } catch (Exception e) {
            // handle ex
        }

    }
}

用法

//using A class
TemplateClass polymorphicVariable = new TemplateClass(new A());
polymorphicVariable.commonMethod();

//using B class
polymorphicVariable = new TemplateClass(new B());
polymorphicVariable.commonMethod();

Answer 2

我会使用第三个实用程序类

static method classC(classType){

    some variable initialization
    get this common interface In
    try {
      do something

      if (classType is A)
        In.methodAA()
      else 
        In.methodBB()

    } catch () {
      do something
    }
}