public class IntegerDemo { public static void main(String[] args) { Integer a=127; Integer b=127; System.out.println(a==b);//true Integer aa=128; Integer bb=128; System.out.println(aa==bb);//false Integer aaa=129; int bbb=129; System.out.println(aaa==bbb);//true Integer aaaa=130; Integer bbbb=130; System.out.println(aaaa==bbbb.intValue());//true } }
Integer 的"=="不能随意使用
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