要将数据从数据库导入 Java 表格,可以使用 JDBC 连接数据库并执行查询语句来获取数据,然后将数据填充到 Java 表格中。
以下是一个简单的示例代码来演示如何将数据从数据库中导入到 Java 表格中:
```java
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class Main {
public static void main(String[] args) {
String url = "jdbc:mysql://localhost:3306/mydatabase";
String username = "root";
String password = "password";
try (Connection conn = DriverManager.getConnection(url, username, password);
Statement stmt = conn.createStatement()) {
String query = "SELECT * FROM mytable";
ResultSet rs = stmt.executeQuery(query);
JTable table = new JTable(buildTableModel(rs));
JFrame frame = new JFrame();
frame.add(new JScrollPane(table));
frame.setSize(600, 400);
frame.setVisible(true);
} catch (SQLException e) {
e.printStackTrace();
}
}
public static DefaultTableModel buildTableModel(ResultSet rs) throws SQLException {
ResultSetMetaData metaData = rs.getMetaData();
// Create column names
Vector
int columnCount = metaData.getColumnCount();
for (int i = 1; i <= columnCount; i++) {
columnNames.add(metaData.getColumnName(i));
}
// Create data rows
Vector
while (rs.next()) {
Vector
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