java - Java 中的元素间距

Question

当我运行 java 代码时，我在 GUI 上的字段和按钮间距方面遇到问题。我正在寻找一些帮助和解释，或者一个制作精良的网站的方向，解释如何轻松地分隔元素。下面是我的很长的代码，希望它能很好地显示，这样我就不会疲劳你的眼睛。

我试图在第一个文本框之后和第二个文本框之后获得间距，以便按钮可以位于相同的 x 位置，但只是在 y 轴上向下移动。我尝试添加新的插图并按下按钮，但它们被向下推到右侧，并且没有任何东西看起来再居中。

public class theater_proceeds extends JFrame    
{

//winow dimentions

private final int wh = 300;
private final int ww = 500;

//20% gross keep
private final double percent_rev = 0.20;

//Labels
private JLabel adult_price;
private JLabel adult_num;
private JLabel child_price;
private JLabel child_num;

//Fields
private JTextField a_price;
private JTextField a_num;
private JTextField c_price;
private JTextField c_num;

//Buttons
private JButton calculate;
private JButton exit;

//panel
private JPanel theater;

private GridBagConstraints gbc;

theater_proceeds()
{
    //set the size
    setSize(ww, wh);

    //set the title
    setTitle("Theater Proceeds Calculator");

    //set exit default action
    setDefaultCloseOperation(EXIT_ON_CLOSE);

    //constraints
    gbc = new GridBagConstraints();

    //set the insets
    gbc.insets = new Insets(0,0,0,60);


    //create the panel
    theater = new JPanel();

    //set the layout manager
    theater.setLayout(new GridBagLayout());

    //initialize each pair of field and label and add them to the panel
    //starting with first 2
    adult_num = new JLabel("Number of Adults");
    gbc.gridx = 0;
    gbc.gridy = 0;
    theater.add(adult_num, gbc);

    a_num = new JTextField(10);
    gbc.gridx = 0;
    gbc.gridy = 1;
    theater.add(a_num, gbc);

    //second pair        
    adult_price = new JLabel("Price per Adult");
    gbc.gridx = 1;
    gbc.gridy = 0;
    theater.add(adult_price,gbc);

    a_price = new JTextField(10);
    gbc.gridx = 1;
    gbc.gridy = 1;
    theater.add(a_price, gbc);


    //third pair
    child_num = new JLabel("Number of Children");
    gbc.gridx = 0;
    gbc.gridy = 2;
    theater.add(child_num, gbc);


    c_num = new JTextField(10);
    gbc.gridx = 0;
    gbc.gridy = 3;
    theater.add(c_num, gbc);


    //forth pair
    child_price = new JLabel("Price per Child");
    gbc.gridx = 1;
    gbc.gridy = 2;
    theater.add(child_price, gbc);


    c_price = new JTextField(10);
    gbc.gridx = 1;
    gbc.gridy = 3;
    theater.add(c_price, gbc);


    calculate = new JButton("Calculate");
    gbc.gridx = 0;
    gbc.gridy = 7;
    theater.add(calculate, gbc);

    exit = new JButton("Exit");
    gbc.gridx = 1;
    gbc.gridy = 7;
    theater.add(exit, gbc);

    add(theater);

    setVisible(true);

}

}

Answer 1

当您为按钮设置 Inset 时，请确保将您在开始时为每个组件设置的 60 保持正确。

添加按钮之前:gbc.insets = new Insets(50, 0, 0, 60);

将 50 替换为您想要的任何插图。