swing中Tree與滾動條用法實例分析

本文實例講述了鞦韆中樹：：

導入java.awt。*;導入java.awt.event。*; import javax.swing。*; import javax.swing.tree。 Jtextfield JTF; public void init（）{container contentpane = getContentPane（）; contentpane.setLayout（new BorderLayout（））; DefaultMutableTreeNode TOP = new DefaultMutableTreeNode（“ options”）; DefaultMutableTreeNode A = new DefaultMutableTreeNode（“ A”）; top.Add（a）; DefaultMutableTreeNode A1 = new DefaultMutableTreeNode（“ A1”）; A.Add（A1）; DefaultMutableTreeNode A2 = new DefaultMutableTreeNode（“ A2”）; A.Add（A2）; DefaultMutableTreeNode B = new DefaultMutableTreeNode（“ B”）; top.add（b）; DefaultMutableTreeNode B1 =新DefaultMutableTreeNode（“ B1”）; B.Add（B1）; DefaultMutableTreeNode B2 = new DefaultMutableTreeNode（“ B2”）; B.Add（B2）; tree = new jtree（top）; int v = scrollpaneconstants.vertical_scrollbar_as_needed; int h = scrollpaneconstants.horizo​​ntal_scrollbar_as_needed; JSCrollpane JSP =新JSCrollpane（Tree，V，H）; contentpane.Add（JSP，BorderLayout.Center）; jtf = new jtextfield（“”，20）; contentpane.add（JTF，borderlayout.south）; tree.AddMousElistener（new Mouseadapter（）{public void mouseclicked（mouseevent me）{domouseclicked（me）;}}）; } void domouseclicked（mouseevent me）{treepath tp = tree.getPathForlocation（me.getx（），me.gety（））;如果（tp！= null）jtf.setText（tp.tostring（））; else jtf.setText（“”）; }}}

希望本文所述對大家的爪哇程序設計有所幫助。