JScrollPane格式显示Pascals Triangle [英] JScrollPane formatting to show Pascals Triangle

问题描述

所以我想让我的Jscrollpane显示帕斯卡三角形.我有这个:

so I want to make my Jscrollpane to show Pascals triangle. I have this:

labelPanel= new JPanel();
lRows = new JLabel[n];

for (int i=0;i<n;i++){
    lRows[i]=new JLabel(Arrays.toString(tri.tri[i]));
    labelPanel.add(lRows[i]);
}

但这不是我想要的，我不确定如何解决它，包括图片.有帮助吗?

But it's not what I want and I am not sure how to fix that, picture included. Any help?

推荐答案

默认情况下，JPanel使用流布局.要获得所需的垂直排列，您应该能够通过在labelPanel上使用垂直方向的BoxLayout进行操作，然后添加JLabel行.

By default, JPanel uses a flow layout. To get the vertical arrangement you are looking for, you should be able to do this by using a BoxLayout with a vertical orientation on your labelPanel, then add your JLabel rows.

labelPanel= new JPanel();
//set this up to order things vertically
labelPanel.setLayout(new BoxLayout(labelPanel, BoxLayout.Y_AXIS));
lRows = new JLabel[n];

for (int i=0;i<n;i++){
    lRows[i]=new JLabel(Arrays.toString(tri.tri[i]));
    //to center your label, just set the X alignment
    lRows[i].setAlignmentX(Component.CENTER_ALIGNMENT)
    labelPanel.add(lRows[i]);
}

我还排成一行以使行像您的图片一样居中. Component来自java.awt软件包.

I also threw in a line to center the rows like your picture. Component comes from the java.awt package.

您可以在 Java教程

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