Java 设置JFrame大小后，JPanel大小不会更新

所以我很难让它工作。 我正在创建一个JFrame，并使用BorderLayout.center将一个JPanel添加到它的中心。就创建它而言，一切都非常有效，但每当我现在通过执行以下操作来调整窗口的大小：

window.setSize（新维度（600600）），内部的JPanel不会自动更新以延伸到窗口。我试图从JPanel的大小中获取信息，但由于JPanel的大小不会在窗口更改时立即更新，因此JPanel的大小保持不变

下面是我的代码（以及我所说的）：（updateMinHeightAndWidth（）和getMinHeightAndWidth（）实际上是相同的，但需要分开）

（列表标签）

公共类listenPanel扩展了JPanel{
公共窗口设置（）{
窗口设置尺寸（新尺寸（600600））；
window.repaint（）；//显示图像的位置
JPanel tempJPanel；
listenButton listenButton；
对于（temporaryIncrimentVariable=0；temporaryIncrimentVariable（最大高度*列表.getRows（）））{
上限=（上限+下限）/2；
}否则{
下限=（上限+下限）/2；
}
试一试{
Set Set（新维度（40，（上界+下界）/ 2））/ /设置窗口大小到中间的一半
睡眠（200）；
}捕捉（中断异常e）{
}
}
tempVerticalSize=上限；
上限=40000；
lowerBound=0；
试一试{
窗口大小设置（新的维度（上界+下界）/ 2, 40）；/ /设置窗口大小到中间的一半
睡眠（200）；
}捕捉（中断异常e）{
}
while（centerPanel.getSize（）.width！=（MAX_width*list.getColumns（））&（（下限+上限）/2）！=下限）{
如果（centerPanel.getSize（）.width>（最大宽度*列表.getColumns（）））{
上限=（上限+下限）/2；
}否则{
下限=（上限+下限）/2；
}
试一试{
窗口大小设置（新的维度（上界+下界）/ 2, 40）；/ /设置窗口大小到中间的一半
睡眠（200）；
}捕捉（中断异常e）{
}
}
返回新的int[]{tempVerticalSize，上限}；
}
}

还有我的构造器

public TestingCenterWindow() {
    list = new ComputerList();
    window = new JFrame();
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setResizable(true);
    window.setSize(500, 500);
    window.setTitle("Testing Center Computers");
    window.setLayout(new BorderLayout());

    centerPanel = new listenPanel();
    centerPanel.setBackground(Color.BLUE);
    centerPanel.setLayout(new GridLayout(list.getRows(), list.getColumns()));

    JPanel tempJPanel;
    listenButton listenButton;
    for (temporaryIncrimentVariable = 0; temporaryIncrimentVariable < list.getRows() * list.getColumns(); temporaryIncrimentVariable++) {
        tempJPanel = new JPanel();
        tempJPanel.setLayout(new BorderLayout());
        tempJPanel.setOpaque(false);
        listenButton = new listenButton();
        tempJPanel.add(listenButton, BorderLayout.CENTER);
        listenLabel timerLabel = new listenLabel();
        tempJPanel.add(timerLabel, BorderLayout.NORTH);
        centerPanel.add(tempJPanel);
    }

    window.add(centerPanel, BorderLayout.CENTER);
    window.setJMenuBar(computerMenuBar);

    int[] minHeightAndWidth = getMinHeightAndWidth();
    window.setMinimumSize(new Dimension(minHeightAndWidth[1], minHeightAndWidth[0]));

    window.setVisible(true);
}

private int[] getMinHeightAndWidth() {
    int tempVerticalSize;
    window.pack();
    window.setVisible(false);
    int upperBound = 40000;
    int lowerBound = 0;
    try {
        window.setSize(new Dimension(40, (upperBound + lowerBound) / 2)); //Set window size to halfway in the middle
        Thread.sleep(200);
    } catch (InterruptedException e) {

    }
    while (centerPanel.getSize().height != (MAX_HEIGHT * list.getRows()) && ((lowerBound + upperBound) / 2) != lowerBound) {
        if (centerPanel.getSize().height > (MAX_HEIGHT * list.getRows())) {
            upperBound = (upperBound + lowerBound) / 2;
        } else {
            lowerBound = (upperBound + lowerBound) / 2;
        }
        try {
            window.setSize(new Dimension(40, (upperBound + lowerBound) / 2)); //Set window size to halfway in the middle
            Thread.sleep(200);
        } catch (InterruptedException e) {

        }
    }

    tempVerticalSize = upperBound;

    upperBound = 40000;
    lowerBound = 0;
    try {
        window.setSize(new Dimension((upperBound + lowerBound) / 2, 40)); //Set window size to halfway in the middle
        Thread.sleep(200);
    } catch (InterruptedException e) {

    }
    while (centerPanel.getSize().width != (MAX_WIDTH * list.getColumns()) && ((lowerBound + upperBound) / 2) != lowerBound) {
        if (centerPanel.getSize().width > (MAX_WIDTH * list.getColumns())) {
            upperBound = (upperBound + lowerBound) / 2;
        } else {
            lowerBound = (upperBound + lowerBound) / 2;
        }
        try {
            window.setSize(new Dimension((upperBound + lowerBound) / 2, 40)); //Set window size to halfway in the middle
            Thread.sleep(200);
        } catch (InterruptedException e) {

        }
    }

    return new int[]{tempVerticalSize, upperBound};
}

公共测试中心窗口（）{
列表=新计算机列表（）；
window=newjframe（）；
window.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）；
window.setresizeable（true）；
设置窗口大小（500500）；
window.setTitle（“测试中心计算机”）；
setLayout（新的BorderLayout（））；
centerPanel=新建listenPanel（）；
中心面板。立根背景（颜色。蓝色）；
setLayout（新的GridLayout（list.getRows（），list.getColumns（））；
JPanel tempJPanel；
listenButton listenButton；
对于（temporaryIncrimentVariable=0；temporaryIncrimentVariable（最大高度*列表.getRows（）））{
上限=（上限+下限）/2；
}否则{
下限=（上限+下限）/2；
}
public TestingCenterWindow() {
    list = new ComputerList();
    window = new JFrame();
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setResizable(true);
    window.setSize(500, 500);
    window.setTitle("Testing Center Computers");
    window.setLayout(new BorderLayout());

    centerPanel = new listenPanel();
    centerPanel.setBackground(Color.BLUE);
    centerPanel.setLayout(new GridLayout(list.getRows(), list.getColumns()));

    JPanel tempJPanel;
    listenButton listenButton;
    for (temporaryIncrimentVariable = 0; temporaryIncrimentVariable < list.getRows() * list.getColumns(); temporaryIncrimentVariable++) {
        tempJPanel = new JPanel();
        tempJPanel.setLayout(new BorderLayout());
        tempJPanel.setOpaque(false);
        listenButton = new listenButton();
        tempJPanel.add(listenButton, BorderLayout.CENTER);
        listenLabel timerLabel = new listenLabel();
        tempJPanel.add(timerLabel, BorderLayout.NORTH);
        centerPanel.add(tempJPanel);
    }

    window.add(centerPanel, BorderLayout.CENTER);
    window.setJMenuBar(computerMenuBar);

    int[] minHeightAndWidth = getMinHeightAndWidth();
    window.setMinimumSize(new Dimension(minHeightAndWidth[1], minHeightAndWidth[0]));

    window.setVisible(true);
}

private int[] getMinHeightAndWidth() {
    int tempVerticalSize;
    window.pack();
    window.setVisible(false);
    int upperBound = 40000;
    int lowerBound = 0;
    try {
        window.setSize(new Dimension(40, (upperBound + lowerBound) / 2)); //Set window size to halfway in the middle
        Thread.sleep(200);
    } catch (InterruptedException e) {

    }
    while (centerPanel.getSize().height != (MAX_HEIGHT * list.getRows()) && ((lowerBound + upperBound) / 2) != lowerBound) {
        if (centerPanel.getSize().height > (MAX_HEIGHT * list.getRows())) {
            upperBound = (upperBound + lowerBound) / 2;
        } else {
            lowerBound = (upperBound + lowerBound) / 2;
        }
        try {
            window.setSize(new Dimension(40, (upperBound + lowerBound) / 2)); //Set window size to halfway in the middle
            Thread.sleep(200);
        } catch (InterruptedException e) {

        }
    }

    tempVerticalSize = upperBound;

    upperBound = 40000;
    lowerBound = 0;
    try {
        window.setSize(new Dimension((upperBound + lowerBound) / 2, 40)); //Set window size to halfway in the middle
        Thread.sleep(200);
    } catch (InterruptedException e) {

    }
    while (centerPanel.getSize().width != (MAX_WIDTH * list.getColumns()) && ((lowerBound + upperBound) / 2) != lowerBound) {
        if (centerPanel.getSize().width > (MAX_WIDTH * list.getColumns())) {
            upperBound = (upperBound + lowerBound) / 2;
        } else {
            lowerBound = (upperBound + lowerBound) / 2;
        }
        try {
            window.setSize(new Dimension((upperBound + lowerBound) / 2, 40)); //Set window size to halfway in the middle
            Thread.sleep(200);
        } catch (InterruptedException e) {

        }
    }

    return new int[]{tempVerticalSize, upperBound};
}