4
我有一个边框布局,我想将网格布局添加到中心部分。但是,我无法声明网格,然后将其添加到我的中心边界。我怎样才能做到这一点?如何在java中的边界布局中嵌入网格布局
public Liability_Calculator(String s)
{
super(s);
setSize(325,200);
c = getContentPane();
c.setLayout(new BorderLayout());
//the top label
total = new JLabel("Total monthly liabilities ", JLabel.CENTER);
c.add(total, BorderLayout.NORTH);
//the grid
GridLayout grid = new GridLayout(2,2);
text_field1 = new JTextField(7);
//I GET AN ERROR HERE!!!!!!!
grid.add(text_field1);
//AND ERROR HERE!!!!!!!!!!!!!
c.add(grid, BorderLayout.CENTER);
setVisible(true);
}