從JList中

Question

數據庫顯示的數據我使用下面的代碼從數據庫中檢索數據，但我不知道如何來顯示它在JList

Class.forName("oracle.jdbc.driver.OracleDriver"); 
Statement stmt = null; 
ResultSet rs;                   
Connection conn=DriverManager.getConnection("jdbc:mysql://127.0.0.1/SPL","root","PWD"); 
stmt=(Statement) conn.createStatement(); 
rs=stmt.executeQuery(query); 
while (rs.next()) 
{ 
    String stadium = rs.getString("Stadium"); 
    String city = rs.getString("City"); 
} 

，但我想顯示JList列數據。你們能告訴我怎麼做嗎？

---

我用下面的代碼，但它不是我的框架上顯示什麼，你可以告訴我在哪裏，我錯了？由於

String query="SELECT * FROM Location"; 
DefaultListModel model=new DefaultListModel(); 
DefaultListModel model1=new DefaultListModel(); 
try 
{            Class.forName("oracle.jdbc.driver.OracleDriver"); 
Statement stmt = null; 
ResultSet rs;                   
Connection conn=DriverManager.getConnection("jdbc:mysql://127.0.0.1/SPL","root","PWD"); 
stmt=(Statement) conn.createStatement(); 
rs=stmt.executeQuery(query); 
while (rs.next()) 
{ 
String stadium = rs.getString("Stadium"); 
String city = rs.getString("City"); 
model.addElement(stadium); 
model1.addElement(city); 
} 
JList list=new JList(model); 
JList list1=new JList(model1); 
f8.add(jpa1); //f8=frame name,jpa1=panel name 
jpa1.add(list);         list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);      list.setLayoutOrientation(JList.HORIZONTAL_WRAP); 
list.setVisibleRowCount(1); 
JScrollPane listScroller = new JScrollPane(list);           
} 
catch(SQLException e) 
{ 
System.out.println("Message : " + e.getMessage()); 
} 

Answer 1

一個JList可能基於一個ListModel，所以你需要做一個ListModel包含您的數據，然後用它來使你的JList。我會做一個類Stadium什麼的，有兩個String字段，name和city。

public class Stadium { 
    private String name; 
    private String city; 

    public Stadium(String name, String city){...} 
    //toString()-method to make it display in a meaningful way in the JList 
    public String toString(){ return name + " - " + city; } 
} 

，然後你可以寫類似

... 
DefaultListModel listModel = new DefaultListModel(); 
while (rs.next()) { 
    String name = rs.getString("Stadium"); 
    String city = rs.getString("City"); 
    Stadium stadium = new Stadium(name, city) 
    listModel.addElement(stadium); 
} 
JList list = new JList(listModel); 

沒有嘗試編譯和測試該代碼，但希望點是有幫助的！