Java Swing - 如何獲取JScrollPane中的組件
我們想知道如何獲取JScrollPane中的組件。
import java.awt.Component;
import java.awt.Dimension;
import java.util.Arrays;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JViewport;
public class Main {
public static void main(String[] args) {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Vector<Vector<String>> rowData = new Vector<Vector<String>>();
Vector<String> columnName = new Vector<String>(Arrays.asList("Column 1"));
for (int i = 0; i < 2000; i++) {
rowData.add(new Vector<String>(Arrays.asList(Integer.toString(i))));
}
JTable table = new JTable(rowData, columnName);
JScrollPane scrollPane = new JScrollPane(table);
JScrollBar vertical = scrollPane.getVerticalScrollBar();
vertical.setPreferredSize(new Dimension(0, 0));
f.add(scrollPane);
f.pack();
f.setVisible(true);
JViewport view = scrollPane.getViewport();
Component[] components = view.getComponents();
for (int i1 = 0; i1 < components.length; i1++) {
if (components[i1] instanceof JTable) {
System.out.println("got");
}
}
}
}
【jscrollpane】
