Java中增强for循环代码示例

//数组
int[] numbers = {1, 2, 3, 4, 5}; 
for (int number : numbers) { 
    System.out.println(number); 
} 
 
//集合
ArrayList<String> names = new ArrayList<>(); 
names.add("测试"); 
names.add("你好"); 
 
for (String name : names) { 
    System.out.println(name); 
}

import java.util.Iterator;

/**
 * 一个简单的逆序输出增强for循环
 * @author 
 *
 */
public class ReverIterableClass<T> implements Iterable<T> {
protected T[] elements;
public ReverIterableClass(T... elems) {
this.elements=elems;
//this.object=(T[])new Object[ts.length];
}
public Iterator<T> iterator() {
return new Iterator<T>(){
private int current=elements.length-1;
public boolean hasNext() {
return current>-1;
}


public T next() {
return elements[current--];
}


public void remove() {
throw new UnsupportedOperationException("目前不支持删除操作");
}
};
}
public static void main(String[] args){
ReverIterableClass<String> iterableClass=new ReverIterableClass<String>("a","b","c","d");
for(String s:iterableClass){
System.out.println(s);
}
}
}