Java中的 CompoundName size() 方法和示例

javax.naming.CompoundName 类的size()方法用于返回复合名称对象的大小，该大小等于该复合名称中的组件数。

句法：

public int size()

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中非负数的组件。

下面的程序说明了 CompoundName.size() 方法：
方案一：

// Java program to demonstrate
// CompoundName.size()
  
import java.util.Properties;
import javax.naming.CompoundName;
import javax.naming.InvalidNameException;
  
public class GFG {
    public static void main(String[] args)
        throws InvalidNameException
    {
  
        // need properties for CompoundName
        Properties props = new Properties();
        props.put("jndi.syntax.separator", ":");
        props.put("jndi.syntax.direction",
                  "left_to_right");
  
        // create compound name object
        CompoundName CompoundName1
            = new CompoundName(
                "a:b:z:y:x", props);
  
        // apply size()
        int size = CompoundName1.size();
  
        // print value
        System.out.println("size: "
                           + size);
    }
}

输出：

size: 5

方案二：

// Java program to demonstrate
// CompoundName.size() method
  
import java.util.Properties;
import javax.naming.CompoundName;
import javax.naming.InvalidNameException;
  
public class GFG {
    public static void main(String[] args)
        throws InvalidNameException
    {
  
        // need properties for CompoundName
        Properties props = new Properties();
        props.put("jndi.syntax.separator", "/");
        props.put("jndi.syntax.direction",
                  "left_to_right");
  
        // create compound name object
        CompoundName CompoundName1
            = new CompoundName(
                "c/e/d/v/a/b/z/y/x/f",
                props);
  
        // apply size()
        int size = CompoundName1.size();
  
        // print value
        System.out.println("size:" + size);
    }
}

输出：

size:9

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