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for循环语句例子

来源:智榕旅游
for循环语句例子

1. for 循环的结构:

for (initialization; condition; increment/decrement) { statement(s); }

2. for循环的例子:

(1)对于数组:

for (int i = 0; i < arr.length; i++) { System.out.println(arr[i]); }

(2)对于保存计数变量的循环: for (int i = 0; i < 10; i++) {

System.out.println(\"This is the \" + i + \"th time.\"); }

(3)根据逻辑判断实现循环: int count = 0; boolean stop = false; while (!stop) { count++; if (count >= 10) {

stop = true; }

System.out.println(\"This is the \" + count + \"th time.\"); }

(4)遍历Map:

for (Map.Entry entry : map.entrySet()) { String key = entry.getKey(); Object value = entry.getValue(); System.out.println(key + \" : \" + value); }

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