Java 使用HashMap对JTree节点分组
我正在尝试使用HashMap构建一个JTree,其中值作为主类别,键作为子类别。从本质上看,它是这样的:Java 使用HashMap对JTree节点分组,java,hashmap,jtree,Java,Hashmap,Jtree,我正在尝试使用HashMap构建一个JTree,其中值作为主类别,键作为子类别。从本质上看,它是这样的: Movies -Marvel -The Avengers -Guardians of the Galaxy -James Bond -Casino Royale -Skyfall Movies -Marvel -The Avengers -Marvel -Guardians of the Gal
Movies
-Marvel
-The Avengers
-Guardians of the Galaxy
-James Bond
-Casino Royale
-Skyfall
Movies
-Marvel
-The Avengers
-Marvel
-Guardians of the Galaxy
现在,当我尝试构建树时,我得到了一个1对1的层次结构,其中每个键都被分配了一个新的类别,即使与字符串匹配的类别已经存在。看起来是这样的:
Movies
-Marvel
-The Avengers
-Guardians of the Galaxy
-James Bond
-Casino Royale
-Skyfall
Movies
-Marvel
-The Avengers
-Marvel
-Guardians of the Galaxy
下面是我的代码。如何在节点中进行搜索以确保不会出现任何重复的类别
public class JTree extends JFrame {
private javax.swing.JTree genreTree;
private JPanel panel1;
public JTree() throws IOException{
super("Genre Search");
setContentPane(panel1);
pack();
setDefaultCloseOperation(WindowConstants.HIDE_ON_CLOSE);
setVisible(true);
setSize(new Dimension(500,500));
genreTree.setModel(null);
HashMap<String, String> hash = new HashMap<String, String>();
hash.put("Avengers","Marvel");
hash.put("Guardians","Marvel");
hash.put("Casino Royale","James Bond");
hash.put("Skyfall","James Bond");
String genreName = "Movies";
DefaultMutableTreeNode genreMainTree = new
DefaultMutableTreeNode(genreName);
DefaultMutableTreeNode mediaTitleNode = new DefaultMutableTreeNode("");
DefaultMutableTreeNode universeTitleNode = new
DefaultMutableTreeNode("");
Set<String> keys = hash.keySet();
Collection<String> values = hash.values();
ArrayList<Map.Entry<String,String>> copy = new
ArrayList<Map.Entry<String, String>>();
copy.addAll(hash.entrySet());
for (Map.Entry<String,String> e : copy){
mediaTitleNode = new DefaultMutableTreeNode(e.getKey());
universeTitleNode = new DefaultMutableTreeNode(e.getValue());
genreMainTree.add(universeTitleNode);
universeTitleNode.add(mediaTitleNode);
}
genreTree.setModel(new DefaultTreeModel(genreMainTree));
}
}
公共类JTree扩展了JFrame{
私有javax.swing.JTree genreTree;
私人JPanel小组1;
公共JTree()引发IOException{
超级(“体裁搜索”);
setContentPane(面板1);
包装();
setDefaultCloseOperation(WindowConstants.HIDE_ON_CLOSE);
setVisible(真);
设置尺寸(新尺寸(500500));
genreTree.setModel(null);
HashMap hash=新的HashMap();
hash.put(“复仇者”、“奇迹”);
hash.put(“监护人”、“奇迹”);
hash.put(“皇家赌场”、“詹姆斯·邦德”);
hash.put(“Skyfall”、“James Bond”);
字符串genreName=“Movies”;
DefaultMutableTreeNode genreMainTree=新建
DefaultMutableTreeNode(genreName);
DefaultMutableTreeNode mediaTitleNode=新的DefaultMutableTreeNode(“”);
DefaultMutableTreeNode UniversityTeleNode=新建
DefaultMutableTreeNode(“”);
Set keys=hash.keySet();
集合值=hash.values();
ArrayList copy=new
ArrayList();
copy.addAll(hash.entrySet());
用于(地图条目e:副本){
mediaTitleNode=新的DefaultMutableTreeNode(e.getKey());
UniverseTleNode=新的DefaultMutableTreeNode(e.getValue());
genreMainTree.add(UniversityTeleNode);
添加(中间标题节点);
}
setModel(新的DefaultTreeModel(genreMainTree));
}
}
如何在节点中进行搜索以确保不会出现任何重复的类别
使用类别设置贴图的关键帧,并使用其节点对其进行赋值
Map<String, DefaultMutableTreeNode> categoryToNode = new HashMap<>();
谢谢你,这比我想做的更有意义!