我使用 JScrollPane 将一些值放入 JTable 中,但 JScrollPane 必须在用户单击按钮之前不可见。但在我手动最大化窗口之前,JScrollPane 仍然不可见。我几乎尝试了所有方法,.validate(); .revalidate(); .repaint()...我正在使用 Netbeans,并且在 JScrollPane 的自定义代码中我编写了以下内容:
scrollPane = new javax.swing.JScrollPane();
this.scrollPane.setVisible(false);
// El código de los subcomponentes y del gestor de distribución - no se muestra aquí
// El código que agrega el componente al contenedor superior - no se muestra aquí
然后,在 MouseReleased 上:
private void botoGeneraLlistatMouseReleased(java.awt.event.MouseEvent evt) {
this.generaLlistat();
}
在 genericLlistat() 的末尾:
public void generaLlistat(){{
...(Some code requesting data from DB)
JTable table = new JTable(rows, headings);
scrollPane.setViewportView(table);
this.scrollPane.setVisible(true);
statement.close();
connection.close();
}
我将不胜感激任何帮助:) 谢谢大家,对我的英语语法和拼写感到抱歉。
最佳答案
尝试这样做:
package stack;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class Aitor extends JFrame implements ActionListener{
JTable table;
JPanel panel = new JPanel();
JButton button = new JButton("Add");
String data[][]={{"hey","hey"},{"hey","hey"},{"hey","hey"},{"hey","hey"}, {"hey","hey"},{"hey","hey"}
,{"hey","hey"},{"hey","hey"},{"hey","hey"},{"hey","hey"},{"hey","hey"},{"hey","hey"},{"hey","hey"},{"hey","hey"}
,{"hey","hey"},{"hey","hey"}};
String columns[] = {"First","Second"};
public Aitor(){
setLayout(new BorderLayout());
panel.setLayout(new BorderLayout());
panel.setPreferredSize(new Dimension(500,400));
button.addActionListener(this);
add(panel,BorderLayout.CENTER);
add(button, BorderLayout.SOUTH);
}
public static void main(String [] a){
Aitor aitor = new Aitor();
aitor.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
aitor.pack();
aitor.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent arg0) {
panel.removeAll();
table =new JTable(data,columns);
panel.add(new JScrollPane(table),BorderLayout.CENTER);
repaint();
revalidate();
}
}
关于java - JScrollpane 仅在最大化窗口后可见 Java Swing,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12223564/