XY版面JAVA

将容器的布局设置为null（无LayoutManager）时，可以使用component.setBounds（x，y，w，h）分别设置组件的边界。

*在所有情况下， *固定的版式都会 导致 UI设计不良
（在99％的情况下）（例如，如果您的标签没有得到其首选的尺寸，则当您的应用程序支持多种语言时，您会遇到市长问题），所以
我的建议是写一个专业的布局经理可以满足您的特定需求 。

编写自定义布局管理器非常容易，您所要做的就是能够计算具有给定组件和布局的容器的首选大小，并通过设置组件的（计算出的）边界来进行布局。我摆脱了GridBagLayout并很久以前就开始编写自己的布局，而布局从未如此简单。

这是一个自定义布局的示例，该布局用于布局键和值组件对：

public class KeyValueLayout implements LayoutManager {    public static enum KeyAlignment {        LEFT, RIGHT;    }    private KeyAlignment keyAlignment = KeyAlignment.LEFT;    private int hgap;    private int vgap;    public KeyValueLayout () {        this(KeyAlignment.LEFT);    }    public KeyValueLayout (KeyAlignment keyAlignment) {        this(keyAlignment, 5, 5);    }    public KeyValueLayout (int hgap, int vgap) {        this(KeyAlignment.LEFT, hgap, vgap);    }    public KeyValueLayout (KeyAlignment keyAlignment, int hgap, int vgap) {        this.keyAlignment = keyAlignment != null ? keyAlignment : KeyAlignment.LEFT;        this.hgap = hgap;        this.vgap = vgap;    }    public void addLayoutComponent (String name, Component comp) {    }    public void addLayoutComponent (Component comp, Object constraints) {    }    public void removeLayoutComponent (Component comp) {    }    public void layoutContainer (Container parent) {        Rectangle canvas = getLayoutCanvas(parent);        int ypos = canvas.y;        int preferredKeyWidth = getPreferredKeyWidth(parent);        for (Iterator<Component> iter = new ComponentIterator(parent); iter.hasNext();) { Component key = (Component) iter.next(); Component value = iter.hasNext() ? (Component) iter.next() : null; int xpos = canvas.x; int preferredHeight = Math.max(key.getPreferredSize().height, value != null ? value.getPreferredSize().height : 0); if (keyAlignment == KeyAlignment.LEFT)     key.setBounds(xpos, ypos, key.getPreferredSize().width, key.getPreferredSize().height); else     key.setBounds(xpos + preferredKeyWidth - key.getPreferredSize().width, ypos, key.getPreferredSize().width,         key.getPreferredSize().height); xpos += preferredKeyWidth + hgap; if (value != null)     value.setBounds(xpos, ypos, canvas.x + canvas.width - xpos, preferredHeight); ypos += preferredHeight + vgap;        }    }    public Dimension minimumLayoutSize (Container parent) {        int preferredKeyWidth = getPreferredKeyWidth(parent);        int minimumValueWidth = 0;        int minimumHeight = 0;        int lines = 0;        for (Iterator<Component> iter = new ComponentIterator(parent); iter.hasNext();) { lines++; Component key = (Component) iter.next(); Component value = iter.hasNext() ? (Component) iter.next() : null; minimumHeight += Math.max(key.getPreferredSize().height, value != null ? value.getMinimumSize().height : 0); minimumValueWidth = Math.max(minimumValueWidth, value != null ? value.getMinimumSize().width : 0);        }        Insets insets = parent.getInsets();        int minimumWidth = insets.left + preferredKeyWidth + hgap + minimumValueWidth + insets.right;        minimumHeight += insets.top + insets.bottom;        if (lines > 0) minimumHeight += (lines - 1) * vgap;        return new Dimension(minimumWidth, minimumHeight);    }    public Dimension preferredLayoutSize (Container parent) {        int preferredKeyWidth = getPreferredKeyWidth(parent);        int preferredValueWidth = 0;        int preferredHeight = 0;        int lines = 0;        for (Iterator<Component> iter = new ComponentIterator(parent); iter.hasNext();) { lines++; Component key = (Component) iter.next(); Component value = iter.hasNext() ? (Component) iter.next() : null; preferredHeight += Math.max(key.getPreferredSize().height, value != null ? value.getPreferredSize().height : 0); preferredValueWidth = Math.max(preferredValueWidth, value != null ? value.getPreferredSize().width : 0);        }        Insets insets = parent.getInsets();        int preferredWidth = insets.left + preferredKeyWidth + hgap + preferredValueWidth + insets.right;        preferredHeight += insets.top + insets.bottom;        if (lines > 0) preferredHeight += (lines - 1) * vgap;        return new Dimension(preferredWidth, preferredHeight);    }    public Dimension maximumLayoutSize (Container target) {        return preferredLayoutSize(target);    }    private int getPreferredKeyWidth (Container parent) {        int preferredWidth = 0;        for (Iterator<Component> iter = new ComponentIterator(parent); iter.hasNext();) { Component key = (Component) iter.next(); if (iter.hasNext())     iter.next(); preferredWidth = Math.max(preferredWidth, key.getPreferredSize().width);        }        return preferredWidth;    }    private Rectangle getLayoutCanvas (Container parent) {        Insets insets = parent.getInsets();        int x = insets.left;        int y = insets.top;        int width = parent.getSize().width - insets.left - insets.right;        int height = parent.getSize().height - insets.top - insets.bottom;        return new Rectangle(x, y, width, height);    }    private class ComponentIterator implements Iterator<Component> {        private Container container;        private int index = 0;        public ComponentIterator (Container container) { this.container = container;        }        public boolean hasNext () { return index < container.getComponentCount();        }        public Component next () { return container.getComponent(index++);        }        public void remove () {        }    }}

只需设置布局并交替添加标签和值组件即可。它易于使用，特别是与GridBagLayout或具有自定义布局的嵌套面板相比。