关于java的Praktische Arbeit

ZICK · 发表于 2004-6-11 15:37

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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import javax.swing.border.*;

public class RaumbAnz extends JPanel{

public RaumbAnz() {

MutableTreeNode root = new DefaultMutableTreeNode("Raums");
MutableTreeNode beams = new DefaultMutableTreeNode("Beams");
MutableTreeNode gears = new DefaultMutableTreeNode("Gears");
root.insert(beams, 0);
root.insert(gears, 1);
beams.insert(new DefaultMutableTreeNode("1*4 black"), 0);
beams.insert(new DefaultMutableTreeNode("1*6 black"), 1);
beams.insert(new DefaultMutableTreeNode("1*8 black"), 2);
beams.insert(new DefaultMutableTreeNode("1*12 black"), 3);
gears.insert(new DefaultMutableTreeNode("8t"), 0);
gears.insert(new DefaultMutableTreeNode("24t"), 1);
gears.insert(new DefaultMutableTreeNode("40t"), 2);
gears.insert(new DefaultMutableTreeNode("worm"), 3);
gears.insert(new DefaultMutableTreeNode("crown"), 4);
final DefaultTreeModel model = new DefaultTreeModel (root);
final JTree tree = new JTree(model);
String[] headings =
   new String[] {"RAUM","Hot?","Origin","Destintion","ShipDate","Weight" };
Object[][] data = new Object[][] {
   { "100420",Boolean.FALSE,"Des Moines IA","Spokane WA","02/06/2000",  new Float(450)},
   { "202147",Boolean.TRUE,"Basking Ridge NJ","Princeton NJ","05/20/2000",  new Float(1250)},
   { "450877",Boolean.TRUE,"St. Paul MN","Austin TX","03/20/2000",
   new Float(1745)},
   { "101891",Boolean.FALSE,"Boston MA","Albany NY","04/04/2000",
   new Float(88)},
};
this.setLayout(null);
JTable table = new JTable( data , headings );
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
JPanel tablePanel = new JPanel();
tablePanel.setLayout(null);
tablePanel.setBorder(BorderFactory.createTitledBorder(null,
   "table:",
   TitledBorder.DEFAULT_JUSTIFICATION,
   TitledBorder.DEFAULT_POSITION,
   new Font("Dialog", Font.PLAIN, 11),
   Color.black));
tablePanel.setBounds(new Rectangle(410, 10, 400, 400));
table.setBounds(new Rectangle(30, 30, 300, 200));
JPanel treePanel = new JPanel();
treePanel.setBounds(new Rectangle(10, 10, 400, 400));
tree.setBounds(new Rectangle(30, 30, 300, 200));
treePanel.setBorder(BorderFactory.createTitledBorder(null,
   "Tree:",
   TitledBorder.DEFAULT_JUSTIFICATION,
   TitledBorder.DEFAULT_POSITION,
   new Font("Dialog", Font.PLAIN, 11),
   Color.black));
add(treePanel);
add(tablePanel);
tablePanel.add(table);
treePanel.add(tree);
}
}

ZICK · 发表于 2004-6-19 03:57

int rows = 10;
int cols = 5;
JTable table = new JTable(rows, cols);
JTableHeader header = table.getTableHeader();

container.setLayout(new BorderLayout());

// Add header in NORTH slot
container.add(header, BorderLayout.NORTH);

// Add table itself to CENTER slot
container.add(table, BorderLayout.CENTER);

现在搞定了

ZICK · 发表于 2004-6-22 14:11

用了一个JList和一个JTextField，想要达到的效果是当在list中选择不同的时候，对应textfield文字也相应改变。
作成这这个样子，没达到效果，那位大大帮我看一下啊，谢了。

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Lister {

public static void main(String[] args) {

JFrame frame=new JFrame("Lister v1.0");
final JTextField tf=new JTextField("");
String [] items = { "ID:1- W011","ID:2- W114","ID:3- N417" };

//创建一个列表框
final JList list=new JList(items);
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
list.addMouseListener(new MouseListener(){
public void mouseClicked(MouseEvent e){
Object[] selection=list.getSelectedValues();
if (selection.equals("ID:1- W011")) { //问题在这儿！！！！！！
System.out.print("ID:1- W011");
tf.setText("ID:1- W011");}
if (selection.equals("ID:2- W114")) {
System.out.print("ID:2- W114");
tf.setText("ID:2- W114");}
if (selection.equals("ID:3- N417")) {
System.out.print("ID:3- N417");
tf.setText("ID:3- N417");}
}
public void mousePressed(java.awt.event.MouseEvent e) {}
public void mouseReleased(java.awt.event.MouseEvent e) {}
public void mouseEntered(java.awt.event.MouseEvent e) {}
public void mouseExited(java.awt.event.MouseEvent e) {}

});
JButton button = new JButton("Per favore");
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
Object[] selection=list.getSelectedValues();
System.out.print("-----");
for (int i=0;i<selection.length;i++)
System.out.println(selection);
tf.setText("try more");
}
});

//将控制交给内容格

Container c = frame.getContentPane();
JPanel comboPanel = new JPanel();
JPanel cowboPanel = new JPanel();
comboPanel.setBounds(0, 0, 300, 500);
cowboPanel.setBounds(300, 10, 300, 500);
cowboPanel.setLayout(null);
tf.setBounds(100, 100, 100, 30);
button.setBounds(200, 500, 100, 50);
comboPanel.add(new JScrollPane(list));
cowboPanel.add(tf);
c.setLayout(null);
c.add(comboPanel);
c.add(cowboPanel);
c.add(button);

frame.setSize(800,600);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}

daxia108 · 发表于 2004-6-22 18:33

问题就在于JList有两个Method, getValues()和getValue(),你用了第一个，返回的是一个选择数组，用第二个返回的就是你所选的单个属性了。

Object selection=list.getSelectedValue();

另外你下面的那半个for循环可以去掉了。

ZICK · 发表于 2004-6-23 14:15

谢了，楼上的

这样好像也行

                  int i=list.getSelectedIndex();
switch(i)
{
     case 0:
tf.setText("ID:1- W011");
break;
                  case 1:
tf.setText("ID:2- W114");
break;
case 2:
tf.setText("ID:3- N417");
break;
}

还有，换成树，就不知道怎么弄了

ZICK · 发表于 2004-6-23 14:25

想要用树上节点的点击控制表中的数据

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.table.*;
import javax.swing.tree.*;
import javax.swing.border.*;
public class RaumbAnz extends JPanel{
JPanel jPanel1 = new JPanel();
JPanel jPanel2 = new JPanel();
JTextArea jTextArea = new JTextArea();

// 创建一些表格数据
String[] headings =
   new String[] {"","Montag","Dienstag","Mittwoch","Donnerstag","Freitag"};
Object[][] data = new Object[][] {
   { "08:00-19:00","","","","",""},
   { "08:15-09:45","","","","",""},
   { "10:00-11:30","","","","",""},
   { "11:45-13:15","","","","",""},
   { "13:15-14:15","","","","",""},
   { "14:15-15:45","","","","",""},
   { "16:00-17:30","","","","",""},
   { "17:45-19:15","","","","",""},
   { "19:30-21:00","","","","",""},
   };
Object[][] data1 = new Object[][] {
   { "08:00-19:00","Uebung","Vorlesung","","",""},
   { "08:15-09:45","","","","",""},
   { "10:00-11:30","","","","",""},
   { "11:45-13:15","","","","",""},
   { "13:15-14:15","","","","",""},
   { "14:15-15:45","","","","",""},
   { "16:00-17:30","","","","",""},
   { "17:45-19:15","","","","",""},
   { "19:30-21:00","","","","",""},
   };
Object[][] data2 = new Object[][] {
   { "08:00-19:00","","","","",""},
   { "08:15-09:45","","Uebung","","",""},
   { "10:00-11:30","","","","",""},
   { "11:45-13:15","","","","",""},
   { "13:15-14:15","","","","",""},
   { "14:15-15:45","","","","",""},
   { "16:00-17:30","","","","",""},
   { "17:45-19:15","","","","",""},
   { "19:30-21:00","","","","",""},
   };
Object[][] data3 = new Object[][] {
   { "08:00-19:00","","","","",""},
   { "08:15-09:45","","","","",""},
   { "10:00-11:30","","","Uebung","",""},
   { "11:45-13:15","","","","",""},
   { "13:15-14:15","","","","",""},
   { "14:15-15:45","","","","",""},
   { "16:00-17:30","","","","",""},
   { "17:45-19:15","","","","",""},
   { "19:30-21:00","","","","",""},
   };
//创建数据模型和JTable
JTable table = new JTable( data , headings );
JTableHeader header = table.getTableHeader();

public static void main(String[] args) {
}

public RaumbAnz() {
// 创建节点的层次结构
MutableTreeNode root = new DefaultMutableTreeNode("Raum");
MutableTreeNode ws1 = new DefaultMutableTreeNode("Wolframstr.32");
MutableTreeNode ws2 = new DefaultMutableTreeNode("Wolframstr.34");
root.insert(ws1, 0);
root.insert(ws2, 1);
ws1.insert(new DefaultMutableTreeNode("W011"), 0);
ws1.insert(new DefaultMutableTreeNode("W114"), 1);
ws2.insert(new DefaultMutableTreeNode("N417"), 0);

// 创建 JTree
final DefaultTreeModel model = new DefaultTreeModel (root);
final JTree tree = new JTree(model);
jPanel1.add(tree);
tree.setBounds(new Rectangle(20, 20, 160, 520));

//tree.setSelectionModel(TreeSelectionModel.SINGLE_TREE_SELECTION);
                                 //这一句不知道该怎么加进去
/*tree.addMouseListener(new MouseListener(){
   public void mouseClicked(MouseEvent e){
   int i=tree.getSelectionCount();
   switch(i)
   {
   case 0:
         table.getColumn(data1);
   break;
   case 1:
   table.getColumn(data2);
   break;
   case 2:
   table.getColumn(data3);
   break;
   }
   }
   public void mousePressed(java.awt.event.MouseEvent e) {}
   public void mouseReleased(java.awt.event.MouseEvent e) {}
   public void mouseEntered(java.awt.event.MouseEvent e) {}
   public void mouseExited(java.awt.event.MouseEvent e) {}

});*/
//具体控制也达不到效果
   try {
init();
   }
   catch(Exception e) {
e.printStackTrace();
   }
}
private void init() throws Exception {
this.setLayout(null);
jPanel1.setBorder(BorderFactory.createTitledBorder(null,
   "Auswahl des Raums:",
   TitledBorder.DEFAULT_JUSTIFICATION,
   TitledBorder.DEFAULT_POSITION,
   new Font("Dialog", Font.PLAIN, 12),
   Color.black));
jPanel1.setBounds(new Rectangle(10, 10, 200, 550));
jPanel1.setLayout(null);
jPanel2.setBorder(BorderFactory.createTitledBorder(null,
   "Hier koennen Sie sich die Belegung aller Raeume anzeigen lassen:",
   TitledBorder.DEFAULT_JUSTIFICATION,
   TitledBorder.DEFAULT_POSITION,
   new Font("Dialog", Font.PLAIN, 12),
   Color.black));
jPanel2.setBounds(new Rectangle(250, 10, 650, 550));
jPanel2.setLayout(null);
header.setBounds(new Rectangle(20, 20, 610, 30));
table.setBounds(new Rectangle(20, 50, 610, 350));
table.setEnabled(false);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
jTextArea.setBounds(new Rectangle(20,410,610,130));

this.add(jPanel1);
this.add(jPanel2);
jPanel2.add(header);
jPanel2.add(table);
jPanel2.add(jTextArea);

   }

}

daxia108 · 发表于 2004-6-23 17:29

你的程序结构太乱，无从下手。对于JTable的数据偶建议你使用JTable Model , 具体你可以看看偶列的那个例子，因为你的data数据多数雷同，并不需要反复使用。另外把JTree的初始化放到Konstruktrur里面也让偶十分费解，你既没有Frame又没有Window，窗口是如何初始化的？

leotao · 发表于 2004-7-6 12:02

最初由 daxia108 发布
[B]你既没有Frame又没有Window，窗口是如何初始化的？ [/B]

粗略的看了一下，他好像直接都放在panel里了

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关于java的Praktische Arbeit

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