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我有一個通過JPanel中的GridLayout佈局的對象數組。我需要能夠在數組中的索引中重新創建對象,並通過GridLayout更新來反映這一點。到目前爲止,我仍然無法找到「刷新」或重繪GridLayout。是否可以在不創建整個GridLayout或JPanel的情況下刷新GridLayout?假設我沒有訪問JFrame的權限。在GridLayout中更新網格
import javax.swing.*;
import java.awt.*;
public class Test
{
public static void main(String args[])
{
JFrame frame = new JFrame();
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(5,5));
JLabel[][] labels = new JLabel[5][5];
for (int i = 0; i < 5; i++)
{
for (int j = 0; j < 5; j++)
{
labels[j][i] = new JLabel("("+j+", "+i+")");
panel.add(labels[j][i]);
}
}
labels[0][0] = new JLabel("Hello World");
//Without doing it this way (cause my objects can't do this)
//labels[0][0].setText("Hello World!");
frame.add(panel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setResizable(false);
frame.setVisible(true);
}
}