part of AES code in JSP

org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: 19 in the jsp file: /index.jsp
Generated servlet error:
C:\Users\Welcome\.netbeans\5.5\apache-tomcat-5.5.17_base\work\Catalina\localhost\yep.jsp\org\apache\jsp\index_jsp.java:142: cannot find symbol
symbol  : method nextline()
location: class java.util.Scanner
        inp=sn.nextline();
              ^
1 error



    public  void inputstate(int s[][],int s2[][]) throws IOException
        {

              Scanner sn = new Scanner(System.in);
           Scanner so = new Scanner(System.in);
            char [][] s1 = new char[4][4];

            String inp;
            int i,j,k,len,lenf,rn;
            //Random r = new Random(10);
            for(i=0;i<4;i++)
            {
                for(j=0;j<4;j++)
                {
                    s1[j][i]=0;

                }
            }

            writer.println("Enter password:");

            inp=sn.nextline();
            len=inp.length();
           lenf=16-len;

            for(i=len;i<16;i++)
            {
                //rn=r.nextInt();
                inp= new StringBuffer(inp).insert(i," ").toString();

            }

            for(i=0;i<4;i++)
            {
                for(j=0;j<4;j++)
                {
                s1[j][i]=inp.charAt((i*4)+j);
                s[j][i]=s1[j][i];
                s2[j][i]=s1[j][i];
                }
            }



            for(i=0;i<4;i++)
            {
                writer.println();
                for(j=0;j<4;j++)
                {

               writer.println(s1[i][j]+" ");
                }
            }

        }