Method does no return a value at line 。。写类时碰到的麻烦，请帮忙啊

Question

package CheckLogin;
import ConnectDatabase.*;
import java.sql.*;public class CheckLogin {
  private String sql=new String();
  public CheckLogin() {
    ConnectDatabase.Initialize();
  }
  public boolean checkUser(String user_id,String pwd)  { //提示错误地方
    return true;  /////
  }
}

Answer 1

package CheckLogin;
import ConnectDatabase.*;
import java.sql.*;public class CheckLogin {
  private String sql=new String();
  public CheckLogin() {
    ConnectDatabase.Initialize();
  }
  public boolean checkUser(String user_id,String pwd)  {
    boolean result = false;
    Statement stmt = ConnectDatabase.getStatement();
    if(stmt!=null)
    {
      sql="SELECT user_id,user_password FROM UserBasicData";
      try
      {
        String[] record;
        ResultSet rs = stmt.executeQuery(sql);
        if(!rs.next())
        {
          result = true;
        }
        else
        {
          do{
          record = new String[2];
          record[0] = rs.getString(1);
          record[1] = rs.getString(2);
          if(record[0].compareTo(user_id)!=0)
          {
            continue;
            }
            else
            {
              if(record[1].compareTo(pwd)==0)
              {
                result = true;
                break;
                }
                else
                {
                 continue;
                }
          }            }
            while(rs.next());
        }
      }
      catch(Exception e)
      {
        System.out.println("checkUser"+e.getMessage());
        e.printStackTrace();
      }    }
    else
    {
      result = false;
      ConnectDatabase.closeStatement(stmt);
      return result;
    }
  }
}
我最后完成的，设置了返回值，但还是有这个错误的提示，请帮忙看看是那里的错啊

Answer 2

if else的两个分支里好像都要return的吧！
把return移到外面来就好了。