Java 中的 CopyOnWriteArraySet 迭代器()方法
原文:https://www . geeksforgeeks . org/copy onwriterarrayset-iterator-method-in-Java/
的迭代器()方法 以适当的顺序返回该集合中元素的迭代器。迭代器不支持移除方法。
语法:
public Iterator iterator()
返回值:函数在集合中的元素上返回迭代器。
以下程序说明了上述功能:
程序 1:
// Java Program to illustrate the CopyOnWriteArraySet
// iterator() method in Java
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create object of CopyOnWriteArraySet
CopyOnWriteArraySet<Integer> ArrSet
= new CopyOnWriteArraySet<Integer>();
// Add elements
ArrSet.add(32);
ArrSet.add(67);
ArrSet.add(67);
ArrSet.add(100);
// print CopyOnWriteArraySet
System.out.println("CopyOnWriteArraySet: "
+ ArrSet);
// Call iterator() method of
Iterator iteratorVals = ArrSet.iterator();
// Print elements of iterator
// created from CopyOnWriteArraySet
System.out.println("\nThe iterator values of "
+ "CopyOnWriteArraySet are:\n");
// prints the elements using an iterator
while (iteratorVals.hasNext()) {
System.out.println(iteratorVals.next());
}
}
}
输出:
CopyOnWriteArraySet: [32, 67, 100]
The iterator values of CopyOnWriteArraySet are:
32
67
100
程序二:
// Java Program to illustrate the CopyOnWriteArraySet
// iterator() method in Java
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create object of CopyOnWriteArraySet
CopyOnWriteArraySet<String> ArrSet
= new CopyOnWriteArraySet<String>();
// Add elements
ArrSet.add("gopal");
ArrSet.add("gfg");
ArrSet.add("jgec");
ArrSet.add("sudo");
// print CopyOnWriteArraySet
System.out.println("CopyOnWriteArraySet: "
+ ArrSet);
// Call iterator() method of
Iterator iteratorVals = ArrSet.iterator();
// Print elements of iterator
// created from CopyOnWriteArraySet
System.out.println("\nThe iterator values of "
+ "CopyOnWriteArraySet are:\n");
// prints the elements using an iterator
while (iteratorVals.hasNext()) {
System.out.println(iteratorVals.next());
}
}
}
输出:
CopyOnWriteArraySet: [gopal, gfg, jgec, sudo]
The iterator values of CopyOnWriteArraySet are:
gopal
gfg
jgec
sudo
版权属于：月萌API www.moonapi.com，转载请注明出处
