Java中List for循环的6种写法总结(推荐)

如下所示：

List list = new ArrayList();

for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i));
}

int m = list.size();
for (int i = 0; i < m; i++) {
System.out.println(list.get(i));
}

for (int i = 0, n = list.size(); i < n; i++) {
System.out.println(list.get(i));
}

for (int i = list.size() - 1; i >= 0; i--) {
System.out.println(list.get(i));
}

for (Iterator it = list.iterator(); it.hasNext();) {
System.out.println(it.next());
}

for (Object o : list) {
System.out.println(o);
}

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