java有两个文件,怎么链到一起? 找到一个源码例子import 语句? 怎么写? 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 听不懂你的意思,是将两个文件里的内容链接到一起吗?如果是的话(你如文件A和B),先将文件A的内容输出到文件C再将文件B的内容输出到文件C就行了,很简单的。 看看import的使用方法!http://tech.sina.com.cn/s/2008-07-07/0952722247.shtml import java.awt.Dimension;import java.awt.Color;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTree;import javax.swing.BoxLayout;import javax.swing.tree.TreePath;import javax.swing.tree.DefaultMutableTreeNode;import javax.swing.tree.DefaultTreeModel;/*JTree的构造函数:JTree()JTree(Hashtable value)JTree(Object[] value)//只有这个构造函数可以创建多个根结点JTree(TreeModel newModel)JTree(TreeNode root)JTree(TreeNode root, boolean asksAllowsChildren)JTree(Vector value)*/public class Main{public static void main (String[] args){ //构造函数:JTree() JTree example1 = new JTree(); //构造函数:JTree(Object[] value) Object[] letters= {"a", "b", "c", "d", "e"}; JTree example2 = new JTree (letters); //构造函数:JTree(TreeNode root)(TreeNode空) //用空结点创建树 DefaultMutableTreeNode node1 = new DefaultMutableTreeNode();//定义树结点 JTree example3 = new JTree (node1);//用此树结点做参数调用 JTree的构造函数创建含有一个根结点的树 //构造函数:JTree(TreeNode root)(同上,只是TreeNode非空) //用一个根结点创建树 DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("Color"); JTree example4 = new JTree (node2);//结点不可以颜色,默认为白面黑字 example4.setBackground (Color.lightGray); //构造函数:JTree(TreeNode root, boolean asksAllowsChildren)(同上,只是TreeNode又有不同) //使用DefaultMutableTreeNode类先用一个根结点创建树,设置为可添加孩子结点,再添加孩子结点 DefaultMutableTreeNode color = new DefaultMutableTreeNode("Color", true); DefaultMutableTreeNode gray = new DefaultMutableTreeNode ("Gray"); color.add (gray); color.add (new DefaultMutableTreeNode ("Red")); gray.add (new DefaultMutableTreeNode ("Lightgray")); gray.add (new DefaultMutableTreeNode ("Darkgray")); color.add (new DefaultMutableTreeNode ("Green")); JTree example5 = new JTree (color); //构造函数:JTree(TreeNode root)(同上,只是TreeNode非空) //通过逐个添加结点创建树 DefaultMutableTreeNode biology = new DefaultMutableTreeNode ("Biology"); DefaultMutableTreeNode animal = new DefaultMutableTreeNode ("Animal"); DefaultMutableTreeNode mammal = new DefaultMutableTreeNode ("Mammal"); DefaultMutableTreeNode horse = new DefaultMutableTreeNode ("Horse"); mammal.add (horse); animal.add (mammal); biology.add (animal); JTree example6 = new JTree (biology); horse.isLeaf(); horse.isRoot(); //构造函数:JTree(TreeModel newModel) //用DefaultMutableTreeNodel类定义一个结点再用这个结点做参数定义一个用DefaultTreeMode //创建一个树的模型,再用JTree的构造函数创建一个树 DefaultMutableTreeNode root = new DefaultMutableTreeNode ("Root1"); DefaultMutableTreeNode child1 = new DefaultMutableTreeNode ("Child1"); DefaultMutableTreeNode child11 = new DefaultMutableTreeNode ("Child11"); DefaultMutableTreeNode child111 = new DefaultMutableTreeNode ("Child111"); root.add (child1); child1.add (child11); child11.add (child111); DefaultTreeModel model = new DefaultTreeModel (root); JTree example7 = new JTree (model); JPanel panel = new JPanel(); panel.setLayout (new BoxLayout (panel, BoxLayout.X_AXIS)); panel.setPreferredSize (new Dimension (700, 400)); panel.add (new JScrollPane (example1));//JTree必须放在JScrollPane上 panel.add (new JScrollPane (example2)); panel.add (new JScrollPane (example3)); panel.add (new JScrollPane (example4)); panel.add (new JScrollPane (example5)); panel.add (new JScrollPane (example6)); panel.add (new JScrollPane (example7)); JFrame frame = new JFrame ("JTreeDemo"); frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE); frame.setContentPane (panel); frame.pack(); frame.show();}} 如何使用Runtime.getRuntime().exec(String[]cmdArray) 公司的笔试题,正则表达式 JAVA新手入门应看哪本书 关于中文乱码的问题 请问java操作excel几种方式的区别 SimpleDateFormat转换am jsp页面提交后,要让服务器去处理逻辑,而IE能够继续做其他的界面操作,这能实现吗? 高分求java反编译工具jad v1.5.8! 我的第一个applet程序,但编译时有两个错误,实在搞不明白,请帮忙!谢谢! Jbuilder7退出和关闭时,程序没有响应,是何缘故? java 运维 垃圾回收的基本回收算法
import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.BoxLayout;
import javax.swing.tree.TreePath;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
/*
JTree的构造函数:
JTree()
JTree(Hashtable value)
JTree(Object[] value)//只有这个构造函数可以创建多个根结点
JTree(TreeModel newModel)
JTree(TreeNode root)
JTree(TreeNode root, boolean asksAllowsChildren)
JTree(Vector value)
*/
public class Main
{
public static void main (String[] args)
{ //构造函数:JTree()
JTree example1 = new JTree();
//构造函数:JTree(Object[] value)
Object[] letters= {"a", "b", "c", "d", "e"};
JTree example2 = new JTree (letters);
//构造函数:JTree(TreeNode root)(TreeNode空)
//用空结点创建树
DefaultMutableTreeNode node1 = new DefaultMutableTreeNode();//定义树结点
JTree example3 = new JTree (node1);//用此树结点做参数调用 JTree的构造函数创建含有一个根结点的树
//构造函数:JTree(TreeNode root)(同上,只是TreeNode非空)
//用一个根结点创建树
DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("Color");
JTree example4 = new JTree (node2);//结点不可以颜色,默认为白面黑字
example4.setBackground (Color.lightGray);
//构造函数:JTree(TreeNode root, boolean asksAllowsChildren)(同上,只是TreeNode又有不同)
//使用DefaultMutableTreeNode类先用一个根结点创建树,设置为可添加孩子结点,再添加孩子结点
DefaultMutableTreeNode color = new DefaultMutableTreeNode("Color", true);
DefaultMutableTreeNode gray = new DefaultMutableTreeNode ("Gray");
color.add (gray);
color.add (new DefaultMutableTreeNode ("Red"));
gray.add (new DefaultMutableTreeNode ("Lightgray"));
gray.add (new DefaultMutableTreeNode ("Darkgray"));
color.add (new DefaultMutableTreeNode ("Green"));
JTree example5 = new JTree (color);
//构造函数:JTree(TreeNode root)(同上,只是TreeNode非空)
//通过逐个添加结点创建树
DefaultMutableTreeNode biology = new DefaultMutableTreeNode ("Biology");
DefaultMutableTreeNode animal = new DefaultMutableTreeNode ("Animal");
DefaultMutableTreeNode mammal = new DefaultMutableTreeNode ("Mammal");
DefaultMutableTreeNode horse = new DefaultMutableTreeNode ("Horse");
mammal.add (horse);
animal.add (mammal);
biology.add (animal);
JTree example6 = new JTree (biology);
horse.isLeaf();
horse.isRoot(); //构造函数:JTree(TreeModel newModel)
//用DefaultMutableTreeNodel类定义一个结点再用这个结点做参数定义一个用DefaultTreeMode
//创建一个树的模型,再用JTree的构造函数创建一个树 DefaultMutableTreeNode root = new DefaultMutableTreeNode ("Root1");
DefaultMutableTreeNode child1 = new DefaultMutableTreeNode ("Child1");
DefaultMutableTreeNode child11 = new DefaultMutableTreeNode ("Child11");
DefaultMutableTreeNode child111 = new DefaultMutableTreeNode ("Child111");
root.add (child1); child1.add (child11); child11.add (child111); DefaultTreeModel model = new DefaultTreeModel (root); JTree example7 = new JTree (model); JPanel panel = new JPanel();
panel.setLayout (new BoxLayout (panel, BoxLayout.X_AXIS));
panel.setPreferredSize (new Dimension (700, 400));
panel.add (new JScrollPane (example1));//JTree必须放在JScrollPane上
panel.add (new JScrollPane (example2));
panel.add (new JScrollPane (example3));
panel.add (new JScrollPane (example4));
panel.add (new JScrollPane (example5));
panel.add (new JScrollPane (example6));
panel.add (new JScrollPane (example7));
JFrame frame = new JFrame ("JTreeDemo");
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
frame.setContentPane (panel);
frame.pack();
frame.show();
}
}