public class Unname2

本文介绍如何使用Java的泛型接口和匿名内部类实现一个简单的计算器功能,包括乘法运算的实现及调用过程。
部署运行你感兴趣的模型镜像
interface Compute
{
	public void mult(int x,int y);
}
class A
{
	void method1(Compute c,int i,int j)
	{
		c.mult(i,j);
	}
	void method2()
	{
		method1(new Compute()
		{
		 public void mult (int x, int y)
		 {
			System.out.println(x+"yu"+y+"dechengjishi"+(x*y));
		}
		
		
	}
	,100,30);
	}
	}
	public class Unname2
	{
		public static void main(String args[])
		{
			A a=new A();
			a.method2();
		}
	}
	

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using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace useArray1 { public abstract class Animal { protected string name; public string Name { get { return name; } set { name = value; } } public Animal( ) { name = "The animal unname"; } public Animal(string newname) { name = newname; } public void Feed() { Console.WriteLine("{0},has been fed", name); } } public class Cow : Animal { public void Milk() { Console.WriteLine("{0} has been milked..", name); } public Cow(string newname):base(newname) { } } public class Chicken : Animal { public void LayEgg() { Console.WriteLine("{0} has laid an egg.", name); } public Chicken(string newname) : base(newname) { } } internal class Program { static void Main(string[] args) { Console.WriteLine("Create an Array type collection of Animal"+"objects and ust it:"); Animal[] animalArray = new Animal[2]; Cow mycow1 = new Cow ("Leo" ); animalArray[0]= mycow1; animalArray[1] = new Chicken("Bob"); foreach ( Animal myAnimal in animalArray) { Console.WriteLine("New {0} object added to Array collection," + "Name={1}", myAnimal.ToString(), myAnimal.Name); } Console.WriteLine("Array collection has {0} objects.", animalArray.Length); animalArray[0].Feed(); ((Chicken)animalArray[1]).LayEgg(); Console.WriteLine("Create an Array type collection of Animal" + "objects and ust it:"); //集合 ArrayList animalArrayList = new ArrayList(); // Cow mycow2 = new Cow("Peter"); //Add animalArrayList.Add(mycow2); animalArrayList.Add (new Chicken("Roby")); foreach (Animal myAnimal in animalArray) { Console.WriteLine("New {0} object added to Array collection," + "Name={1}", myAnimal.ToString(), myAnimal.Name); } Console.WriteLine("Array collection has {0} objects.", animalArrayList.Count); ((Animal)animalArrayList[0]).Feed(); ((Chicken)animalArrayList[1]).LayEgg(); Console.WriteLine(); Console.WriteLine("Additonal manipulation of ArrayList:"); animalArrayList.RemoveAt(0); ((Animal)animalArrayList[0]).Feed(); animalArrayList.AddRange(animalArray); ((Chicken)animalArrayList[2]).LayEgg(); Console.WriteLine("The anilmal called{0} is at index{1}. ",mycow1.Name, animalArrayList.IndexOf(mycow1)); mycow1.Name = "janice"; Console.WriteLine("The animal is now called{0}", ((Animal)animalArrayList[1]).Name); Console.ReadKey(); } } }
09-04
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