Input data in the input box and click on the right side of the collection list to input box shows the specific information is Shared,
Input information, click on the list to update the input box,
Clearly method was introduced into the value, print and output, but the setText () is not running

This is successful entry data, generated on the right side of the list


When click on the right side of the list on the left side of the box is not refresh




The judge to determine the empty setText () so that

 
//click ok button 
If (um participant etSource ()==button7) {
If (flagAge & amp; & FlagClass & amp; & FlagID & amp; & FlagName & amp; & FlagSex) {
The sta. ExecuteUpdate (into); 
JOptionPane. ShowMessageDialog (null, "added success!" ); 
//to empty input box 
StuName. SetText (" "); 
StuAge. SetText (" "); 
StuClass. SetText (" "); 
StuID. SetText (" "); 
StuSex. SetText (" "); 
//text field display order 
Tamlh. SetText (" ");//to empty 
Tamlh. Append (beginTime + "execution success:" + into + "\ n"); 
//add into the collection box list item 
StuList. The add (+ nameText IDText + ", "); 
} else {
Sta. ExecuteUpdate (update);//delete empty value 
JOptionPane. ShowMessageDialog (null, "you enter illegal!" ); 
Tamlh. SetText (" ");//to empty 
Tamlh. Append (beginTime + ": please enter the complete information about students. \n"); 
} 
} 

Post the source code below the registered listener stuList. AddActionListener (new ListListener ());//call the class: list item click method of the list click
See what baidu said thread problem, but I write a thread setText () don't run!

 
String nameList=null; 
String stuClassList=null; 
String IDList=null; 
String sexList=null; 
String ageList=null; 
//constructor transfer List query in the List of values assigned to input box 
Public void stuText (String nameList, String stuClassList, String IDList, String sexList, String ageList) {
Newf Listrun=new newf (); 
This. NameList=nameList; 
Enclosing stuClassList=stuClassList; 
Enclosing IDList=IDList; 
Enclosing sexList=sexList; 
Enclosing ageList=ageList; 
Thread th=new Thread (Listrun); 
Th. The start (); 
System. The out. Println (" run "+ + + IDList stuClassList nameList + sexList + ageList); 
} 
@ Override 
Public void the run () {
StuName. SetText (nameList); 
StuAge. SetText (stuClassList); 
StuClass. SetText (IDList); 
StuID. SetText (sexList); 
StuSex. SetText (ageList); 
System. The out. Println (" run 111111 "+ + + IDList stuClassList nameList + sexList + ageList); 
} 

This calls when class

 
Package DaZuoYe; 

Import the Java. The awt. Event. An ActionEvent; 
Import the Java. The awt. Event. ActionListener; 
Import the Java. The awt. Event. ItemEvent; 
Import the Java. The awt. Event. ItemListener; 
Import the Java. SQL. *; 
import java.util.Arrays; 

The class ListListener implements ActionListener, ItemListener {

String nameList=null; 
String stuClassList=null; 
String IDList=null; 
String sexList=null; 
String ageList=null; 

@ Override 
Public void itemStateChanged (ItemEvent e) {
//TODO Auto - generated method stub 
//System. Out. Println (um participant etSource ()); 
} 

@ Override 
Public void actionPerformed (an ActionEvent e) {
//TODO Auto - generated method stub 
//System. Out. Println (um participant etActionCommand ()); 

String STR=um participant etActionCommand (); 
String [] arr=STR. The split (", ");//to use, split 
System.out.println(Arrays.toString(arr)); 

Try {
Class.forName("com.mysql.cj.jdbc.Driver");//load driver 
Connection conn=DriverManager. GetConnection (//link database 
"JDBC: mysql://112.125.95.197:3306/Java", 
"Java" and "Aa316216");//set up the database connection 
The Statement sta=conn. CreateStatement ();//the sta executing SQL statements 


String select="select * from stu where name='" + arr [1] + 
"' and ID='" + arr [0] +"' "; 
System. Out. Println (arr arr [0] + [1]). 

The ResultSet rs=sta. ExecuteQuery (select); 

While (rs), next ()) {
NameList=rs. Get string (1); 
StuClassList=rs. Get string (2); 
IDList=rs. Get string (3); 
SexList=rs. Get string (4); 
AgeList=rs. Get string (5); 
} 
System. Out. Println (nameList + stuClassList + IDList + + ageList sexList); 

New newf (). StuText (nameList, stuClassList, IDList sexList, ageList); 


{} to catch (a ClassNotFoundException ClassNotFoundException) 
ClassNotFoundException. PrintStackTrace (); 
{} the catch (SQLException throwables) 
Throwables. PrintStackTrace (); 
} 
} 

} 

I'm afraid that I said the novice do not understand,
Wanted to stick all the code out and found that not enough words ,
For bosses to reassure!