本文實例講述了java swing樹狀組件jtree用法。分享給大家供大家參考，具體如下：
一、簡單樣式
先看運行效果：
treenodedemo.java
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package awtdemo;import javax.swing.jframe;import javax.swing.jtree;import javax.swing.event.treeselectionevent;import javax.swing.event.treeselectionlistener;import javax.swing.tree.defaultmutabletreenode;public class treenodedemo { public static void main(string[] args) { // 創(chuàng)建沒有父節(jié)點和子節(jié)點、但允許有子節(jié)點的樹節(jié)點，并使用指定的用戶對象對它進行初始化。 // public defaultmutabletreenode(object userobject) defaultmutabletreenode group1 = new defaultmutabletreenode("軟件部"); treenode node1 = new treenode(); node1.setname("王雨"); node1.setnickname("漫天飛舞"); group1.add(new defaultmutabletreenode(node1)); treenode node2 = new treenode(); node2.setname("陳夢"); node2.setnickname("夢"); group1.add(new defaultmutabletreenode(node2)); treenode node3 = new treenode(); node3.setname("上官飛兒"); node3.setnickname("飛兒"); group1.add(new defaultmutabletreenode(node3)); defaultmutabletreenode group2 = new defaultmutabletreenode("銷售部"); treenode node4 = new treenode(); node4.setname("上官婉兒"); node4.setnickname("婉兒"); group2.add(new defaultmutabletreenode(node4)); treenode node5 = new treenode(); node5.setname("上官巧兒"); node5.setnickname("巧兒"); group2.add(new defaultmutabletreenode(node5)); defaultmutabletreenode top = new defaultmutabletreenode("職員管理"); top.add(group1); top.add(group2); final jtree tree = new jtree(top); jframe f = new jframe("jtreedemo - www.ythuaji.com.cn"); f.add(tree); f.setsize(300, 300); f.setvisible(true); f.setdefaultcloseoperation(jframe.exit_on_close); // 添加選擇事件 tree.addtreeselectionlistener(new treeselectionlistener() { @override public void valuechanged(treeselectionevent e) { defaultmutabletreenode node = (defaultmutabletreenode) tree.getlastselectedpathcomponent(); if (node == null){ return; }//if object object = node.getuserobject(); treenode user = (treenode) object; system.out.println("你選擇了：" + user.tostring()); } }); }} |
treenode.java
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package 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) { this.name = name; } public string getnickname() { return nickname; } public void setnickname(string nickname) { this.nickname = nickname; } public string getphone() { return phone; } public void setphone(string phone) { this.phone = phone; } public int getage() { return age; } public void setage(int age) { this.age = age; } // 重點在tostring，節(jié)點的顯示文本就是tostring public string tostring() { return name + "["+nickname+"]"; }} |
二、圖標樣式
運行效果：
treenode.java
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package 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) { this.imagepath = imagepath; } public string getname() { return name; } public void setname(string name) { this.name = name; } public string getnickname() { return nickname; } public void setnickname(string nickname) { this.nickname = nickname; } public string getphone() { return phone; } public void setphone(string phone) { this.phone = phone; } public int getage() { return age; } public void setage(int age) { this.age = age; } // 重點在tostring，節(jié)點的顯示文本就是tostring public string tostring() { return name + "["+nickname+"]"; }} |
treecellrenderer.java
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package awtdemo;import java.awt.component;import javax.swing.imageicon;import javax.swing.jtree;import javax.swing.tree.defaultmutabletreenode;import javax.swing.tree.defaulttreecellrenderer;/** * 自定義樹描述類,將樹的每個節(jié)點設置成不同的圖標 * */public class treecellrenderer extends defaulttreecellrenderer{ private static final long serialversionuid = 1l; /** * 重寫父類defaulttreecellrenderer的方法 */ @override public component gettreecellrenderercomponent(jtree tree, object value, boolean selected, boolean expanded, boolean isleaf, int row,boolean hasfocus) { // 選中 if (selected) { setforeground(gettextselectioncolor()); } else { setforeground(gettextnonselectioncolor()); } // treenode defaultmutabletreenode treenode = (defaultmutabletreenode) value; object obj = treenode.getuserobject(); if (obj instanceof treenode) { treenode node = (treenode) obj; defaulttreecellrenderer tempcellrenderer = new defaulttreecellrenderer(); tempcellrenderer.setleaficon(new imageicon(node.getimagepath())); return tempcellrenderer.gettreecellrenderercomponent(tree, node.tostring(), selected, expanded, true, row, hasfocus); } else if (obj instanceof string) { string text = (string) obj; defaulttreecellrenderer tempcellrenderer = new defaulttreecellrenderer(); tempcellrenderer.setopenicon(new imageicon("image/open.jpg")); tempcellrenderer.setclosedicon(new imageicon("image/close.jpg")); return tempcellrenderer.gettreecellrenderercomponent(tree, text, selected, expanded, false, row, hasfocus); } return super.gettreecellrenderercomponent(tree, value, selected, expanded, isleaf, row, hasfocus); }} |
treenodedemo.java
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package awtdemo;import javax.swing.jframe;import javax.swing.jtree;import javax.swing.event.treeselectionevent;import javax.swing.event.treeselectionlistener;import javax.swing.tree.defaultmutabletreenode;public class treenodedemo { public static void main(string[] args) { // 創(chuàng)建沒有父節(jié)點和子節(jié)點、但允許有子節(jié)點的樹節(jié)點，并使用指定的用戶對象對它進行初始化。 // public defaultmutabletreenode(object userobject) defaultmutabletreenode group1 = new defaultmutabletreenode("軟件部"); treenode node1 = new treenode(); node1.setname("王雨"); node1.setnickname("漫天飛舞"); node1.setimagepath("image/1.jpg"); group1.add(new defaultmutabletreenode(node1)); treenode node2 = new treenode(); node2.setname("陳夢"); node2.setnickname("夢"); node2.setimagepath("image/2.jpg"); group1.add(new defaultmutabletreenode(node2)); treenode node3 = new treenode(); node3.setname("上官飛兒"); node3.setnickname("飛兒"); node3.setimagepath("image/3.jpg"); group1.add(new defaultmutabletreenode(node3)); defaultmutabletreenode group2 = new defaultmutabletreenode("銷售部"); treenode node4 = new treenode(); node4.setname("上官婉兒"); node4.setnickname("婉兒"); node4.setimagepath("image/4.jpg"); group2.add(new defaultmutabletreenode(node4)); treenode node5 = new treenode(); node5.setname("上官巧兒"); node5.setnickname("巧兒"); node5.setimagepath("image/5.jpg"); group2.add(new defaultmutabletreenode(node5)); defaultmutabletreenode root = new defaultmutabletreenode(); root.add(group1); root.add(group2); //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ final jtree tree = new jtree(root); tree.setcellrenderer(new treecellrenderer()); tree.putclientproperty("jtree.linestyle", "none"); tree.setrootvisible(true); jframe frame = new jframe("jtreedemo - www.ythuaji.com.cn"); frame.add(tree); frame.setsize(300, 300); frame.setvisible(true); frame.setdefaultcloseoperation(jframe.exit_on_close); //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ // 添加選擇事件 tree.addtreeselectionlistener(new treeselectionlistener() { @override public void valuechanged(treeselectionevent e) { defaultmutabletreenode node = (defaultmutabletreenode) tree.getlastselectedpathcomponent(); if (node == null){ return; }//if object object = node.getuserobject(); if(object instanceof treenode) { treenode user = (treenode) object; system.out.println("你點擊了：" + user.tostring()); } else if(object instanceof string) { string text = (string)object; system.out.println("你點擊了：" + text); } } }); }} |
希望本文所述對大家java程序設計有所幫助。
原文鏈接：http://blog.csdn.net/sunnyyoona/article/details/46292355
