View Compilation Error

0_0_38250957_20107.cpp:48:1: error: unterminated comment
 /*         1）s.length<1000，是提示我们o(n
 ^
0_0_38250957_20107.cpp:2:12: error: expected ':' before 'String'
     public String longestPalindrome(String s) {
            ^
0_0_38250957_20107.cpp:2:12: error: 'String' does not name a type
0_0_38250957_20107.cpp:47:1: error: expected ';' after class definition
 }
 ^