Java 中的向量迭代器()方法，示例
原文:https://www . geesforgeks . org/vector-iterator-method-in-Java-with-examples/
java.util 包中的向量类的迭代器()方法用于返回与向量元素相同的迭代器。元素从向量中随机返回。
语法:
Iterator *iterate_value* = Vector.iterator();
参数:函数不取任何参数。
返回类型:该方法迭代向量的元素并返回值(迭代器)。
例 1:
Java 语言(一种计算机语言，尤用于创建网站)
// Java code to illustrate iterator() Method
// of Vector class
// Importing required classes
import java.util.*;
import java.util.Vector;
// Main class
public class GFG {
// Main driver method
public static void main(String args[])
{
// Creating an empty Vector of string type
Vector<String> vector = new Vector<String>();
// Adding elements into the Vector
// using add() method
vector.add("Welcome");
vector.add("To");
vector.add("Geeks");
vector.add("4");
vector.add("Geeks");
// Printing and displaying the Vector
System.out.println("Vector: " + vector);
// Now creating an iterator
Iterator value = vector.iterator();
// Display message only
System.out.println("The iterator values are: ");
// Condition holds true till there is single element
// remaining using hasNext() method
while (value.hasNext()) {
// Displaying the values
// after iterating through the vector
System.out.println(value.next());
}
}
}
Output:
Vector: [Welcome, To, Geeks, 4, Geeks]
The iterator values are:
Welcome
To
Geeks
4
Geeks
例 2:
Java 语言(一种计算机语言，尤用于创建网站)
// Java code to illustrate iterator() method usage
// with usage of hashCode() method
// Importing required classes
import java.util.*;
// Main class
public class GFG {
// Main driver method
public static void main(String args[])
{
// Creating an empty Vector of integer type
Vector<Integer> vector = new Vector<Integer>();
// Adding custom elements into the Vector
// using add() method
vector.add(10);
vector.add(20);
vector.add(30);
vector.add(40);
vector.add(50);
// Displaying the Vector
System.out.println("Vector: " + vector);
// Creating an iterator
Iterator value = vector.iterator();
// Display message for better readability
System.out.println("The iterator values are: ");
// Holds true till there is single element
while (value.hasNext()) {
// Printing the values after iterating
// through the vector
// using next() method
System.out.println(value.next());
}
}
}
Output:
Vector: [10, 20, 30, 40, 50]
The iterator values are:
10
20
30
40
50
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