我的布局代码有什么问题? [英] What is wrong with my layout code?

问题描述

因此，当我启动程序时，我的按钮变得混乱，并且整个屏幕上都出现了一个巨大的JButton.这是代码:

So, when I start my program, my buttons get mixed up and I get a huge JButton accross whole screen. Here is the code:

super ("Title");

okvir = new JFrame();
okvir.setSize(1350, 768);
okvir.setLocation (0, 0);
okvir.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
okvir.setVisible(true);

sab = new JButton("sabiranje");
sab.setBounds (20 , 20 , 50 , 20);
okvir.add(sab);
od = new JButton ("oduzimanje");
od.setBounds (20 , 40 , 50 , 20);
okvir.add(od);
rez = new JLabel ("rezultat");
rez.setBounds (20 , 60 , 50 , 20);
okvir.add(rez);
x = new JTextField ("",4);
x.setBounds (20 , 80 , 50 , 20);
okvir.add(x);
y = new JTextField("",4);
y.setBounds (20 , 100 , 50 , 20);
okvir.add(y);
mnoz = new JButton("mnozenje");
mnoz.setBounds (20 , 120 , 50 , 20);
okvir.add(mnoz);
delj = new JButton ("deljenje");
delj.setBounds (20 , 140 , 50 , 20);
okvir.add(delj);

推荐答案

您将所有按钮放置在框架的BorderLayout.CENTER位置，这不仅考虑了其子组件的引用大小，而且还替换了每个后续按钮.创建一个新面板来容纳按钮.

You're placing all the buttons in the BorderLayout.CENTER position of the frame which not only respect referred sizes of its child components but replaces each subsequent button. Create a new panel to accomodate the buttons.

由于您使用布局管理器，因此调用setBounds无效，因此可以删除这些语句

Calling setBounds will have no effect since youre using a layout manager so these statements can be deleted

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