2023年6月22日发(作者：)

JavaSwing树状组件JTree⽤法实例详解本⽂实例讲述了Java Swing树状组件JTree⽤法。分享给⼤家供⼤家参考，具体如下：⼀、简单样式先看运⾏效果：ckage awtDemo;import ;import ;import lectionEvent;import lectionListener;import tMutableTreeNode;public class TreeNodeDemo { public static void main(String[] args) { // 创建没有⽗节点和⼦节点、但允许有⼦节点的树节点，并使⽤指定的⽤户对象对它进⾏初始化。 // public DefaultMutableTreeNode(Object userObject) DefaultMutableTreeNode group1 = new DefaultMutableTreeNode("软件部"); TreeNode node1 = new TreeNode(); e("王⾬"); kName("漫天飞舞"); (new DefaultMutableTreeNode(node1)); TreeNode node2 = new TreeNode(); e("陈梦"); kName("梦"); (new DefaultMutableTreeNode(node2)); TreeNode node3 = new TreeNode(); e("上官飞⼉"); kName("飞⼉"); (new DefaultMutableTreeNode(node3)); DefaultMutableTreeNode group2 = new DefaultMutableTreeNode("销售部"); TreeNode node4 = new TreeNode(); e("上官婉⼉"); kName("婉⼉"); (new DefaultMutableTreeNode(node4)); TreeNode node5 = new TreeNode(); e("上官巧⼉"); kName("巧⼉"); (new DefaultMutableTreeNode(node5)); DefaultMutableTreeNode top = new DefaultMutableTreeNode("职员管理"); (group1); (group2); final JTree tree = new JTree(top); JFrame f = new JFrame("JTreeDemo - "); (tree); e(300, 300); ible(true); aultCloseOperation(_ON_CLOSE); // 添加选择事件 eSelectionListener(new TreeSelectionListener() { @Override public void valueChanged(TreeSelectionEvent e) { DefaultMutableTreeNode node = (DefaultMutableTreeNode) tSelectedPathComponent(); if (node == null){ return; }//if Object object = rObject(); TreeNode user = (TreeNode) object; n("你选择了：" + ng()); } }); }}ckage awtDemo;public class TreeNode { private String nickName = ""; private String name = ""; private String phone = ""; private int age; public String getName() { return name; } public void setName(String name) { = name; } public String getNickName() { return nickName; } public void setNickName(String nickName) { me = nickName; } public String getPhone() { return phone; } public void setPhone(String phone) { = phone; } public int getAge() { return age; } public void setAge(int age) { = age; } // 重点在toString，节点的显⽰⽂本就是toString public String toString() { return name + "["+nickName+"]"; }}⼆、图标样式运⾏效果：ckage awtDemo;public class TreeNode { private String nickName = ""; private String name = ""; private String phone = ""; private int age; private String imagePath = ""; public String getImagePath() { return imagePath; } public void setImagePath(String imagePath) { ath = imagePath; } public String getName() { return name; } public void setName(String name) { = name; } public String getNickName() { return nickName; } public void setNickName(String nickName) { me = nickName; } public String getPhone() { return phone; } public void setPhone(String phone) { = phone; } public int getAge() { return age; } public void setAge(int age) { = age; } // 重点在toString，节点的显⽰⽂本就是toString public String toString() { return name + "["+nickName+"]"; }}ckage awtDemo;import ent;import con;import ;import tMutableTreeNode;import tTreeCellRenderer;/** * ⾃定义树描述类,将树的每个节点设置成不同的图标 * */public class TreeCellRenderer extends DefaultTreeCellRenderer{ private static final long serialVersionUID = 1L; /** * 重写⽗类DefaultTreeCellRenderer的⽅法 */ @Override public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean isLeaf, int row,boolean hasFocus) { // 选中 if (selected) { setForeground(getTextSelectionColor()); } else { setForeground(getTextNonSelectionColor()); } // TreeNode DefaultMutableTreeNode treeNode = (DefaultMutableTreeNode) value; Object obj = rObject(); if (obj instanceof TreeNode) { TreeNode node = (TreeNode) obj; DefaultTreeCellRenderer tempCellRenderer = new DefaultTreeCellRenderer(); fIcon(new ImageIcon(gePath())); return eCellRendererComponent(tree, ng(), selected, expanded, true, row, hasFocus); } else if (obj instanceof String) { String text = (String) obj; DefaultTreeCellRenderer tempCellRenderer = new DefaultTreeCellRenderer(); nIcon(new ImageIcon("Image/")); sedIcon(new ImageIcon("Image/")); return eCellRendererComponent(tree, text, selected, expanded, false, row, hasFocus); } return eCellRendererComponent(tree, value, selected, expanded, isLeaf, row, hasFocus); }}ckage awtDemo;import ;import ;import lectionEvent;import lectionListener;import tMutableTreeNode;public class TreeNodeDemo { public static void main(String[] args) { // 创建没有⽗节点和⼦节点、但允许有⼦节点的树节点，并使⽤指定的⽤户对象对它进⾏初始化。 // public DefaultMutableTreeNode(Object userObject) DefaultMutableTreeNode group1 = new DefaultMutableTreeNode("软件部"); TreeNode node1 = new TreeNode(); e("王⾬"); kName("漫天飞舞"); gePath("Image/"); (new DefaultMutableTreeNode(node1)); TreeNode node2 = new TreeNode(); e("陈梦"); kName("梦"); gePath("Image/"); (new DefaultMutableTreeNode(node2)); TreeNode node3 = new TreeNode(); e("上官飞⼉"); kName("飞⼉"); gePath("Image/"); (new DefaultMutableTreeNode(node3)); DefaultMutableTreeNode group2 = new DefaultMutableTreeNode("销售部"); TreeNode node4 = new TreeNode(); e("上官婉⼉"); kName("婉⼉"); gePath("Image/"); (new DefaultMutableTreeNode(node4)); TreeNode node5 = new TreeNode(); e("上官巧⼉"); kName("巧⼉"); gePath("Image/"); (new DefaultMutableTreeNode(node5)); DefaultMutableTreeNode root = new DefaultMutableTreeNode(); (group1); (group2); //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ final JTree tree = new JTree(root); lRenderer(new TreeCellRenderer()); entProperty("yle", "None"); tVisible(true); JFrame frame = new JFrame("JTreeDemo - "); (tree); e(300, 300); ible(true); aultCloseOperation(_ON_CLOSE); //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ // 添加选择事件 eSelectionListener(new TreeSelectionListener() { @Override public void valueChanged(TreeSelectionEvent e) { DefaultMutableTreeNode node = (DefaultMutableTreeNode) tSelectedPathComponent(); if (node == null){ return; }//if Object object = rObject(); if(object instanceof TreeNode) { TreeNode user = (TreeNode) object; n("你点击了：" + ng()); } else if(object instanceof String) { String text = (String)object; n("你点击了：" + text); } } }); }}更多关于java相关内容感兴趣的读者可查看本站专题：《》、《》、《》、《》和《》希望本⽂所述对⼤家java程序设计有所帮助。