class="htmledit_views">

在Java中在构造器中调用另一个构造器,和C#的写法有又那么一点点的不同

class="language-class="tags" href="/tags/JAVA.html" title=java>java">public class Apple
{
	public String name;
	public String color;
	public String weight;
	public Apple()
	{}
	//两个参数构造器
	public Apple(String name,String color,double weight)
	public static void main(String[] args) 
	{
		//通过this调用另一个重载的构造器的初始代码
		this(name,color);
		//下面this引用该构造器正在初始化的Java对象
		this.weight = weight;
	}
}

C#是这样的,写在方法签名中

class="language-csharp">public class MyClass
{
　  private int _Age;
　  private class="tags" href="/tags/STRING.html" title=string>string _Name;

　  public MyClass( class="tags" href="/tags/STRING.html" title=string>string Name):this( Name, 20 )
　  {}

　  public MyClass( class="tags" href="/tags/STRING.html" title=string>string Name, int Age )
　  {
　　    _Age = Age;
　　    _Name = Name;
　  }
}

两都使用了this关键字

如果是调用父类构造器,语法的差别也是类似,Java用super,C#用base

class="language-class="tags" href="/tags/JAVA.html" title=java>java">public class Apple
{
	public String name;
	public String color;
	public String weight;
	public Apple()
	{}
	//两个参数构造器
	public Apple(String name,String color,double weight)
	public static void main(String[] args) 
	{
		//通过this调用另一个重载的构造器的初始代码
		super(name,color);
		//下面this引用该构造器正在初始化的Java对象
		this.weight = weight;
	}

class="language-csharp">public class MyClass
{
　  private int _Age;
　  private class="tags" href="/tags/STRING.html" title=string>string _Name;

　  public MyClass( class="tags" href="/tags/STRING.html" title=string>string Name):base( Name, 20 )
　  {}

　  public MyClass( class="tags" href="/tags/STRING.html" title=string>string Name, int Age )
　  {
　　    _Age = Age;
　　    _Name = Name;
　  }
}