Java在面板中对齐组件
我试图将组件添加到BorderLayout的SOUTH我需要它看起来像这个例子。
------------------------------------ | | | | | | | | | | | | |_TxtField|Button_____________Label| 所以我需要一个JTextField和一个与左边对齐的JButton，以及一个与右边对齐的标签。 我怎么能做到这一点？ 以下是我的代码，我尝试使用嵌套面板执行此操作：
import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class BlackjackGUI{ private JFrame frame; private JPanel panel, panelLeft, panelBottomLeft, panelBottomRight; private JButton newGameBtn, dealBtn, hitBtn, standBtn; private JLabel placeBetLbl, playerMoneyLbl; private JLabel playerCard1Lbl, playerCard2Lbl, playerCard3Lbl, playerCard4Lbl, playerCard5Lbl, playerCard6Lbl, playerCard7Lbl; private JLabel dealerCard1Lbl, dealerCard2Lbl, dealerCard3Lbl, dealerCard4Lbl, dealerCard5Lbl, dealerCard6Lbl, dealerCard7Lbl; private JLabel playerCardValueLbl, dealerCardValueLbl; private JLabel spacer1, spacer2; private JTextField betInputBox; public BlackjackGUI(){ createForm(); addTextField(); addButtons(); addLabels(); frame.add(panel); frame.setVisible(true); } public void createForm() { frame = new JFrame("Blackjack"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(1200,800); panel = new JPanel(); panel.setLayout(new BorderLayout()); Color c = new Color(0, 100, 0); panel.setBackground(c); panelLeft = new JPanel(); Color panelLeftBG = new Color (23, 25, 100); panelLeft.setBackground(panelLeftBG); panel.add(panelLeft, BorderLayout.WEST); panelBottomLeft = new JPanel(); Color panelBottomLeftBG = new Color (56, 12, 10); panelBottomLeft.setBackground(panelBottomLeftBG); panelBottomLeft.setLayout(new FlowLayout(FlowLayout.LEFT)); panel.add(panelBottomLeft, BorderLayout.SOUTH); panelBottomRight = new JPanel(); Color panelBottomRightBG = new Color (12, 88, 40); panelBottomRight.setBackground(panelBottomRightBG); panelBottomRight.setLayout(new FlowLayout(FlowLayout.RIGHT)); panel.add(panelBottomRight, BorderLayout.SOUTH); } public void addButtons() { newGameBtn = new JButton("New Game"); panelLeft.add(newGameBtn, BorderLayout.WEST); newGameBtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent event) { System.exit(0); } }); dealBtn = new JButton("Deal"); dealBtn.setPreferredSize(new Dimension (100, 50)); panelBottomLeft.add(dealBtn); newGameBtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent event) { System.exit(0); } }); } public void addTextField() { betInputBox = new JTextField(); betInputBox.setPreferredSize(new Dimension(175,50)); panelBottomLeft.add(betInputBox); } public void addLabels() { placeBetLbl = new JLabel("Place your bets!"); placeBetLbl.setFont(new Font("Gill Sans MT", Font.PLAIN, 35)); panelBottomLeft.add(placeBetLbl); playerMoneyLbl = new JLabel("£2,500"); playerMoneyLbl.setFont(new Font("Gill Sans MT", Font.PLAIN, 35)); playerMoneyLbl.setLayout(new FlowLayout(FlowLayout.RIGHT)); panelBottomRight.add(playerMoneyLbl); } public static void main(String[] args) { new BlackjackGUI(); } }
一种方法是在面板上使用水平Box Layout 。 然后你可以使用glue来分离组件组：
JPanel panel = new JPanel(); panel.setLayout(...); panel.add(textField); panel.add(button); panel.add(the glue here); panel.add(label);
阅读有关如何使用BoxLayout的Swing教程中的部分， 以获取有关glue和工作示例的更多信息。