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计数并达到数字12，然后中止循环
/** 来自 n o w j a v a . c o m**/ public class Main { public static void main(String[] args) { int number = 2; while (number <= 20) { if (number == 12) break; System.out.print(number + " "); number += 2; } System.out.println(); } } /* from 时 代 J a v a - N o w J a v a . c o m*/