Java中的 CompositeName clone() 方法及示例

javax.naming.CompositeName 类的clone()方法用于返回此复合名称对象的副本。如果您对此原始复合名称的组件进行任何更改，都不会影响 CompositeName 对象的新副本，反之亦然反之亦然。

句法：

public Object clone()

参数：此方法不接受任何内容。

返回值：此方法返回此复合名称的非空副本。

下面的程序说明了 CompositeName.clone() 方法：
方案一：

// Java program to demonstrate
// CompositeName.clone()
  
import javax.naming.CompositeName;
import javax.naming.InvalidNameException;
  
public class GFG {
    public static void main(String[] args)
        throws InvalidNameException
    {
  
        // create Composite name object
        CompositeName compositeName
            = new CompositeName("x/y");
  
        // create clone object
        CompositeName cloneComposite
            = (CompositeName)compositeName.clone();
  
        // print CompositeName
        System.out.println("Clone CompositeName: "
                           + cloneComposite);
    }
}

输出：

Clone CompositeName: x/y

方案二：

// Java program to demonstrate
// CompositeName.clone() method
  
import java.util.Enumeration;
  
import javax.naming.CompositeName;
import javax.naming.InvalidNameException;
  
public class GFG {
    public static void main(String[] args)
        throws InvalidNameException
    {
  
        // create Composite name object
        CompositeName compositeName
            = new CompositeName("x/y/z/a");
  
        // create clone object
        CompositeName cloneComposite
            = (CompositeName)compositeName.clone();
  
        // print CompositeName
        System.out.println("Clone CompositeName: "
                           + cloneComposite);
        System.out.print("Members: ");
        Enumeration enumeration
            = cloneComposite.getAll();
        while (enumeration.hasMoreElements())
            System.out.print(enumeration.nextElement()
                             + ", ");
    }
}

输出：

Clone CompositeName: x/y/z/a
Members: x, y, z, a,

参考资料：https://docs.oracle.com/javase/10/docs/api/javax/naming/CompositeName.html#clone()