[英]Button clicked to open a new JFrame
我目前正在Eclipse上進行復制,我需要按下一個按鈕,然后打開一個JFrame,其中包含來自JTable上MySQL數據庫的值。 我最近在這里問了一個有關我嘗試使用絕對布局(空布局)顯示列時遇到的錯誤的問題,並被告知使用布局會更好。 問題是我在現有表單上有多個按鈕和內容,更改布局會隱藏某些功能,而我找不到解決方案,所以我想到了一些東西。 由於JTable的絕對布局存在問題,並且Layout Manager不能幫助我解決多個按鈕,因此可以從現有表單(空布局)中刪除JTable並保留按鈕。 結果,當用戶在現有表單上按下mySQL應用程序的“按名稱排序”或“添加控制台”按鈕時,應彈出一個新的JFrame並顯示正確的JTable。 有沒有辦法做到這一點?
JTable創建過程:
package newWindow;
import java.awt.*;
import java.sql.*;
import javax.swing.*;
import javax.swing.table.*;
public class newWindow {
public static void main(String[] args) {
new newWindow();
}
public newWindow() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {}
try
{
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/test1?user=mySQL&password=7777");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT * FROM consoles INNER JOIN hardware ON consoles.id=hardware.id");
ResultSetMetaData md = rs.getMetaData();
int columnCount = md.getColumnCount();
String[] cols = new String[columnCount];
int i;
for (i=1;i<= columnCount;i++)
{
cols[i-1] = md.getColumnName(i);
}
DefaultTableModel model = new DefaultTableModel(cols,0);
while (rs.next())
{
Object[] row = new Object[columnCount];
for (i = 1 ; i <= columnCount ; i++)
{
row[i-1] = rs.getObject(i);
}
model.addRow(row);
}
JFrame frame = new JFrame("Promitheas");
JTable table = new JTable(model);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(new GridLayout());
JScrollPane scrollPane = new JScrollPane(table);
frame.getContentPane().add(scrollPane);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
conn.close();
stmt.close();
rs.close();
} catch (SQLException case1) { case1.printStackTrace();
} catch (Exception case2) { case2.printStackTrace();}
}
});
}
}
按名稱排序按鈕:
try{
conn = DriverManager.getConnection("jdbc:mysql://localhost/test1?user=mySQL&password=7777");
String[] gender = { "ASC", "DESC"};
int response = JOptionPane.showOptionDialog(null,"Ascending or Descending Order?","Make a choice...",0,JOptionPane.INFORMATION_MESSAGE,null,gender,gender[0]);
stmtsortname = conn.createStatement();
String sql = null;
if (response == JOptionPane.YES_OPTION)
sql = "ASC";
if (response == JOptionPane.NO_OPTION)
sql = "DESC";
rssortname = stmtsortname.executeQuery("SELECT * FROM consoles INNER JOIN hardware ON consoles.id=hardware.id ORDER BY consoles.name "+sql);
.
.
.
create an newJTable overwriting the old
.
.
} catch ...
創建一個類,將要傳輸的數據作為參數。 做你的魔術設置表,並將可見設置為true並用邏輯替換blala
public class NewJFrame extends JFrame{
public NewJFrame(Data data){
blala
this.setVisible(true);
}
}
然后在按鈕上有ActionListner或類似的內容
new NewJFrame(data);
回答
JButton btnStartTable = new JButton("Start Table");
btnStartTable.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0){
try
{
conn = DriverManager.getConnection("jdbc:mysql://localhost/test1?user=mySQL&password=7777");
stmt = conn.createStatement();
rs = stmt.executeQuery("SELECT * FROM consoles INNER JOIN hardware ON consoles.id=hardware.id");
md = rs.getMetaData();
columnCount = md.getColumnCount();
String[] cols = new String[columnCount];
for (i=1;i<= columnCount;i++)
{
cols[i-1] = md.getColumnName(i);
}
model = new DefaultTableModel(cols,0);
while (rs.next())
{
Object[] row = new Object[columnCount];
for (i = 1 ; i <= columnCount ; i++)
{
row[i-1] = rs.getObject(i);
}
model.addRow(row);
}
frame2 = new JFrame();
frame2.setVisible(true);
JTable table = new JTable(model);
f2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f2.getContentPane().setLayout(new GridLayout());
JScrollPane scrollPane = new JScrollPane(table);
f2.getContentPane().add(scrollPane);
f2.pack();
f2.setLocationRelativeTo(null);
f2.setVisible(true);
conn.close();
stmt.close();
rs.close();
} catch (SQLException case1) { case1.printStackTrace();
} catch (Exception case2) { case2.printStackTrace();}}
});
btnStartTable.setBounds(10, 11, 126, 23);
frame.getContentPane().add(btnStartTable);
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