[英]Good way to implement a child class
So I have about 10-15 classes (this could grow to a much larger number in time) and they all have fairly similar variables within them: 因此,我大约有10-15个类(随着时间的推移,这个类的数量会增加很多),并且它们中的变量都非常相似:
temp
conditions
humidity
load
..And stuff like that. ..诸如此类的东西。 I'm looking to implement a parent class (abstract) to better manage this since they are all runnable.
我希望实现一个父类(抽象)以更好地管理它,因为它们都是可运行的。
There's a part where I call a constructor for each of them and it's... just bad. 在某些地方,我为它们每个都调用了一个构造函数,这很糟糕。
public ThreadHandler(NH.NHandler NSH, int threadNum){
this.threadNum=threadNum;
this.NSH = NSH;
}
public ThreadHandler(OPA.OpaHandler SgeSH, int threadNum){
this.threadNum=threadNum;
this.OpaSH = OpaSH;
}
public ThreadHandler(SGE.SgeHandler SgeSH, int threadNum){
this.threadNum=threadNum;
this.SgeSH = SgeSH;
}
..... and on for 15 .....并持续15
How would I implement a parent class to simply do 我将如何实现一个父类来简单地做
public ThreadHandler(objectType name, int threadNum){
//Do stuff
}
Thanks for any help. 谢谢你的帮助。
You need to create an interface, say, IHandler with common methods and all handlers should implement this interface 您需要创建一个接口,例如,具有通用方法的IHandler,所有处理程序都应实现此接口
public interface IHandler {
.... declare public methods
}
public NHandler implements IHandler {
.... implement all the methods declared in IHandler..
}
Now you can just have the following in ThreadHandler
ThreadHandler
拥有以下ThreadHandler
public ThreadHandler(IHandler handler, int threadNum){ .... call the methods }
I have another example using abstract class
and extends
that to ChildClass
. 我还有另一个使用
abstract class
示例,并将其extends
到ChildClass
。 I hope will help your problem. 希望对您有帮助。
ParentHandler.java ParentHandler.java
public abstract ParentHandler<T> {
public T obj;
public int threadNum;
// Declare the common variable here...
public ParentHandler(T obj, int threadNum) {
this.threadNum = threadNum;
this.obj = obj;
}
}
ChildHandler.java ChildHandler.java
public class ChildHandler extends ParentHandler<NH.NHandler> {
public ChildHandler(NH.NHandler nsh, int threadNum) {
super(nsh, threadNum);
}
}
Implement an interface, every "child" class will implement it, then you can declare an object of the interface type and create a method that returns the especific class based on something, like this. 实现一个接口,每个“子”类都将实现它,然后可以声明该接口类型的对象,并创建一个基于诸如此类的方法返回especific类的方法。
public Interface ITest
{
string temp;
void Test(string param1, string param2);
}
public Class Class1 : ITest
{
void Test(string param1, string param2)
{
// DO STUFF
}
}
public Class Class2 : ITest
{
void Test(string param1, string param2)
{
// DO STUFF
}
}
And then: 接着:
public ITest GetClass(string type)
{
switch (type)
{
case "class1":
return new Class1();
case "class2":
return new Class2();
}
}
And you call it like 你这样称呼它
ITest obj = GetClass("class1");
obj.Test();
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