Java Vector remove()方法

remove(int index)

java.util.vector .remove( int index )方法用于从一个Vector的特定位置或索引中移除一个元素。

语法:

Vector.remove(int index)

参数：该方法接受一个强制性的参数index是整数数据类型，并指定要从向量中删除的元素的位置。

返回值：该方法返回刚刚从矢量中移除的**元素。

下面的程序说明了Java.util.Vector.remove(int index)方法。

// Java code to illustrate remove() when position of
// element is passed as parameter
import java.util.*;
  
public class VectorDemo {
    public static void main(String args[])
    {
  
        // Creating an empty Vector
        Vector<String> vec_tor = new Vector<String>();
  
        // Use add() method to add elements in the Vector
        vec_tor.add("Geeks");
        vec_tor.add("for");
        vec_tor.add("Geeks");
        vec_tor.add("10");
        vec_tor.add("20");
  
        // Output the Vector
        System.out.println("Vector: " + vec_tor);
  
        // Remove the element using remove()
        String rem_ele = vec_tor.remove(4);
  
        // Print the removed element
        System.out.println("Removed element: " + rem_ele);
  
        // Print the final Vector
        System.out.println("Final Vector: " + vec_tor);
    }
}

输出：

Vector: [Geeks, for, Geeks, 10, 20]
Removed element: 20
Final Vector: [Geeks, for, Geeks, 10]

remove(Object o)

java.util.vector .remove( Object o )方法用于从Vector中移除任何特定元素。

语法:

Vector.remove(Object o)

参数：该方法接受一个强制性参数o是Vector的对象类型，并指定要从Vector中删除的元素。

返回值：如果指定的元素被找到并从Vector中移除，返回True，否则返回False。

下面的程序说明了Java.util.Vector.remove(Object O)方法。

// Java code to illustrate remove() method
import java.util.*;
  
public class VectorDemo {
    public static void main(String args[])
    {
        // Creating an empty Vector
        Vector<String> vec_tor = new Vector<String>();
  
        // Use add() method to add elements in the Vector
        vec_tor.add("Geeks");
        vec_tor.add("for");
        vec_tor.add("Geeks");
        vec_tor.add("10");
        vec_tor.add("20");
  
        // Output the Vector
        System.out.println("Vector: " + vec_tor);
  
        // Remove the head using remove()
        Boolean rem_ele;
  
        rem_ele = vec_tor.remove("Geeks");
        // Print the removed element
        if (rem_ele)
            System.out.println("Geeks"
                               + " found and removed.");
        else
            System.out.println("Geeks"
                               + " not found or removed.");
  
        rem_ele = vec_tor.remove("500");
        // Print the removed element
        if (rem_ele)
            System.out.println("500"
                               + " found and removed.");
        else
            System.out.println("500"
                               + " not found or removed.");
  
        // Print the final Vector
        System.out.println("Final Vector: " + vec_tor);
    }
}

输出：

Vector: [Geeks, for, Geeks, 10, 20]
Geeks found and removed.
500 not found or removed.
Final Vector: [for, Geeks, 10, 20]