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测试整数溢出
public class Main { /** 来 自 N o w J a v a . c o m **/ public static void main(String[] args) { int a = 1000000000; System.out.println(a); a += 1000000000; System.out.println(a); a += 1000000000; System.out.println(a); a += 1000000000; System.out.println(a); } }