get - Access string variable outside for loop in java? -

hi folks want access string variable outside loop, can use further coding. here trying values jtable , store in string, create database table. whole code here: http://textuploader.com/?p=6&id=zvewy

coding : int row = table.getrowcount();  int column = table.getcolumncount();  (int j = 0; j < row; j++) {  (int = 0; < column; i++) {   //system.out.println(table.getvalueat(j, i));   string readstr = (string) table.getvalueat(j, i);   // want access string    }   }    try{    // file read , table create    string tname="example";    string dbname="db123";     class.forname("com.mysql.jdbc.driver");     connection conn= (connection)    drivermanager.getconnection("jdbc:mysql://localhost:3306/db123","root","");     statement stmt=(statement) conn.createstatement();      system.out.println("connect");         databasemetadata dmd = (databasemetadata) conn.getmetadata();      while((readstr=brr.readline())!=null)                     // use here     {      resultset rs = dmd.gettables(null,"migrationdb", "example", null);      //set not null column      if (string.valueof(readstr).contains("no"))   readstr=readstr.replaceall("no", "not null");      else if(string.valueof(readstr).contains("yes"))        readstr=readstr.replaceall("yes", "");      if(string.valueof(readstr).contains("primary"))          readstr=readstr.replacefirst("primary","primary key");     system.out.println("replace string "+readstr);   int k=1;    if (!rs.next())   {   stmt.executeupdate("create table "+tname+ "("+readstr+")");      }  else{      system.out.println(readstr);      stmt.executeupdate("alter table "+tname+ " add("+readstr+")");       system.out.println("altered");        }      }      }      catch (exception e){}     }       } 

thank you.

you need understand local variables , lifetime. suggest reading through tutorial: http://www.tutorialspoint.com/java/java_variable_types.htm

in case, declaring readstr outside loop want.

string readstr; for(//loop condition) { readstr = read value ; }