java - swing wait 3 second inside while loop -

this question exact duplicate of:

• swing retrieve data mysql db textfield 2 answers

i have program data mysql db , show in textfield.

i want show 1 record every 3 second.

this code,

connection conn = null;     statement st = null;     resultset rs = null;     string dburl = "jdbc:mysql://localhost:3306/jointdb";     string dbusr = "root";     string dbpass = "a12345";     try{     string sql= "select * eridb  ";     class.forname("com.mysql.jdbc.driver");     conn = drivermanager.getconnection (dburl,dbusr,dbpass);     st = conn.createstatement();     rs = st.executequery(sql);    // textfield1.settext("enter text here");     while(rs.next()){         string value = rs.getstring("id");         textfield1.settext(value);               }  }catch(exception e){     e.printstacktrace(); }finally{     try {         rs.close();     } catch (sqlexception e) {         e.printstacktrace();     }     try {         st.close();     } catch (sqlexception e) {         e.printstacktrace();     }     try {         conn.close();     } catch (sqlexception e) {         e.printstacktrace();     } }  

i have used sleep, program hanging ( no benefits)

please assist me thank ...

if want background jobs take time in swing, should use swingworker (oracle's tutorial, although not helpful... ).

for scheduling task, can go, @andrew thompson said javax.swing.timer (a better tutorial oracle time.