经典java题目

http://yangshangchuan.iteye.com/blog/2354308

                String str1="hello";String str2="he"+new String("llo");System.out.println(str1==str2);//false

int i=Integer.MAX_VALUE;int j=i+1;System.out.println(i);//2147483647System.out.println(j);//-2147483648boolean k=j<i;System.out.println(k);//true