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法律研究如何使用 Java 中的 TableModel 從表單元格中獲取值？
首先，使用 DefaultTableModel 建立一個表 −
String data[][] = {
{"Australia","5","1"},
{"US","10","2"},
{"Canada","9","3"},
{"India","7","4"},
{"Poland","2","5"},
{"SriLanka","5","6"}
};
String col [] = {"Team","Selected Players","Rank"};
DefaultTableModel tableModel = new DefaultTableModel(data,col);
JTable table = new JTable(tableModel);現在，使用 getModel() 從表單元格中獲取該值 −
Object ob = table.getModel().getValueAt(3, 2);
System.out.println("Value = "+ob);以下是一個透過 TableModel 從表單元格中獲取值的示例 −
示例
package my;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRootPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class SwingDemo {
public static void main(String[] argv) throws Exception {
JFrame frame = new JFrame("Demo");
JPanel panel = new JPanel();
String data[][] = {
{"Australia","5","1"},
{"US","10","2"},
{"Canada","9","3"},
{"India","7","4"},
{"Poland","2","5"},
{"SriLanka","5","6"}
};
String col [] = {"Team","Selected Players","Rank"};
DefaultTableModel tableModel = new DefaultTableModel(data,col);
JTable table = new JTable(tableModel);
table.getTableHeader().setResizingAllowed(false);
Dimension dim = new Dimension(50,2);
table.setIntercellSpacing(new Dimension(dim));
Object ob = table.getModel().getValueAt(3, 2);
System.out.println("Value = "+ob);
JScrollPane scrollPane = new JScrollPane(table);
panel.add(scrollPane);
frame.add(panel);
frame.setSize(600,400);
frame.setUndecorated(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getRootPane().setWindowDecorationStyle(JRootPane.INFORMATION_DIALOG);
frame.setVisible(true);
}
}輸出
單元格的值將在控制檯中顯示 −
更新日期：30-07-2019
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