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Java中foreach方法在哪个类中

2025-03-16 10:14:02

推荐回答（1个）

回答1：

java中的foreach也是用for表示
具体语法分两种：
第一种-数组
for(type var : arr) { //循环体}

示例（这里以List为例）：
List list = new ArrayList();for(String item : list){ System.out.println("循环元素：" + item);}

第二种-非数组类可迭代对象
for(type var : coll) { //循环体}

示例：Map map = new HashMap();for(Entry item : map.entrySet()){ System.out.println("循环元素 key:" + item.getKey() + " value:" + item.getValue());}

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