java表格行代码 javagui表格

java swing界面化设计 jtable，如果在后期给表格增加多行记录？请给下参考代码，谢谢

import javax.swing.*;

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import javax.swing.event.TreeSelectionEvent;

import javax.swing.event.TreeSelectionListener;

import javax.swing.table.DefaultTableModel;

import javax.swing.tree.DefaultMutableTreeNode;

import java.awt.*;

import java.util.*;

import java.util.List;

public class StudentManage extends JFrame{

public final static String[] CH_NUM = {"一","二","三","四","五","六","七","八","九","十"};

public final static String ROOT = "班级管理";

public final static int GRADE_NUM = 3;

public final static int CLASS_NUM = 3;

private MapString, ListStudent classes;

public StudentManage() {

setTitle("学生管理系统");

setSize(300, 300);

setLayout(new BorderLayout());

if(classes == null) classes = new HashMap();

DefaultMutableTreeNode top = new DefaultMutableTreeNode(ROOT);

DefaultMutableTreeNode[] gradeNodes = new DefaultMutableTreeNode[GRADE_NUM];

for (int i = 0; i  GRADE_NUM; i++) {

gradeNodes[i] = new DefaultMutableTreeNode(CH_NUM[i] + "年级");

for (int j = 0; j  CLASS_NUM; j++) {

gradeNodes[i].add(new DefaultMutableTreeNode(CH_NUM[j] + "班"));

}

top.add(gradeNodes[i]);

}

final JTree tree = new JTree(top);

String title[] = {"ID","姓名","性别","年龄","地址"};

final DefaultTableModel model = new DefaultTableModel(title, 0);

JTable table=new JTable(model);

tree.addTreeSelectionListener(new TreeSelectionListener() {

@Override

public void valueChanged(TreeSelectionEvent e) {

DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree .getLastSelectedPathComponent();

if (node == null) return;

Object object = node.getUserObject();

if (node.isLeaf()) {

ListStudent stdList = classes.get(getFullPath(node));

Object[][] data = new Object[stdList.size()][5];

for (int i = 0; i  stdList.size(); i++) {

data[i][0] = stdList.get(i).getId();

data[i][1] = stdList.get(i).getName();

data[i][2] = stdList.get(i).getSex();

data[i][3] = stdList.get(i).getAge();

data[i][4] = stdList.get(i).getAddress();

}

while(model.getRowCount()0){

model.removeRow(model.getRowCount()-1);

}

for (int i = 0; i  stdList.size(); i++) {

model.addRow(data[i]);

}

model.fireTableDataChanged();

}

}

});

add(tree, BorderLayout.WEST);

add(new JScrollPane(table), BorderLayout.CENTER);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

private String getFullPath(DefaultMutableTreeNode defaultMutableTreeNode){

StringBuilder sb = new StringBuilder();

Object[] objs = defaultMutableTreeNode.getUserObjectPath();

for (int i = 0; i  objs.length; i++) {

sb.append(objs[i]);

}

return sb.toString().replace(ROOT,"");

}

public void init(){

for (int i = 0; i  GRADE_NUM; i++) {

for (int j = 0; j  CLASS_NUM; j++) {

int n = new Random().nextInt(30)+1;

ListStudent stdList = new ArrayList(n);

for (int k = 0; k  n; k++) {

stdList.add(new Student(k,"学生"+k,"男",

12,“”));

}

classes.put(CH_NUM[i] + "年级"+ CH_NUM[j] +"班", stdList);

}

}

}

public static void main(String[] args) {

StudentManage studentManage = new StudentManage();

studentManage.init();

}

}

class Student {

private int id;

private String name;

private String sex;

private int age;

private String address;

public Student(int id, String name, String sex, int age, String address) {

this.id = id;

this.name = name;

this.sex = sex;

this.age = age;

this.address = address;

}

public Student() {

}

public int getId() {

return id;

}

public String getName() {

return name;

}

public String getSex() {

return sex;

}

public int getAge() {

return age;

}

public String getAddress() {

return address;

}

@Override

public String toString() {

return "Student{" +

"id=" + id +

", name='" + name + '\'' +

", sex='" + sex + '\'' +

", age=" + age +

", address='" + address + '\'' +

'}';

}

}

用java代码实现读取Excel中每个sheet页的内容，并且要与其他的Excel中某一列的值进行

/**

*

* p标题：readExcel/p

* p描述：读取Excel文件数据/p

* @param excelfilePath Excel文件路径

* @param startRow 开始行

* @param startCol 开始列

* @return ListArrayListString

* @throws IOException

* @throws BiffException

*/

public ListMapString, Object readExcel(String excelfilePath,int startRow, int startCol)

throws IOException, BiffException {

// 读取xls文件

InputStream ins = new FileInputStream(excelfilePath);

// 设置读文件编码

WorkbookSettings setEncode = new WorkbookSettings();

setEncode.setEncoding("UTF-8");

Workbook rwb = Workbook.getWorkbook(ins, setEncode);

ListMapString, Object alldata = new ArrayListMapString, Object();

MapString, Object data = null;

alldata.clear();

// 获得当前Excel表共有几个sheet

Sheet[] sheets = rwb.getSheets();

// 获得表数

int pages = sheets.length;

// 将excel表中的数据读取出来

// 在从Excel中读取数据的时候不需要知道每个sheet有几行，有那多少列

for (int i = 0; i pages; i++) {

//这里读取excel中每个sheet的数据，Sheet sheet = rwb.getSheet(i); 读取第二个sheet就是getSheet(1);

Sheet sheet = rwb.getSheet(i);

int cols = sheet.getColumns(); // 列

// 读取每一行对应的列数目

// 循环读取每一行的全部列数目的内容

int rows = sheet.getRows(); // 行

for (int r = startRow; r rows; r++) {

data = new HashMapString, Object();

// 行循环,Excel的行列是从（0，0）开始

for (int c = startCol; c cols; c++) {

Cell excelRows = sheet.getCell(c, r);

data.put("bgbh", excelRows.getContents());

}

alldata.add(data);

}

}

ins.close();

return alldata;

}

java怎么实现表格的行删除

java中表格的删除是通过事件监控来实现的，示例代码如下:

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.JTextField;

import javax.swing.ListSelectionModel;

import javax.swing.table.DefaultTableModel;

//维护表格

public class JTableDefaultTableModelTest extends JFrame{

private DefaultTableModel tableModel; //表格模型对象

private JTable table;

private JTextField aTextField;

private JTextField bTextField;

public JTableDefaultTableModelTest()

{

super();

setTitle("表格");

setBounds(100,100,500,400);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

String[] columnNames = {"A","B"}; //列名

String [][]tableVales={{"A1","B1"},{"A2","B2"},{"A3","B3"},{"A4","B4"},{"A5","B5"}}; //数据

tableModel = new DefaultTableModel(tableVales,columnNames);

table = new JTable(tableModel);

JScrollPane scrollPane = new JScrollPane(table); //支持滚动

getContentPane().add(scrollPane,BorderLayout.CENTER);

//jdk1.6

//排序:

//table.setRowSorter(new TableRowSorter(tableModel));

table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); //单选

table.addMouseListener(new MouseAdapter(){ //鼠标事件

public void mouseClicked(MouseEvent e){

int selectedRow = table.getSelectedRow(); //获得选中行索引

Object oa = tableModel.getValueAt(selectedRow, 0);

Object ob = tableModel.getValueAt(selectedRow, 1);

aTextField.setText(oa.toString()); //给文本框赋值

bTextField.setText(ob.toString());

}

});

scrollPane.setViewportView(table);

final JPanel panel = new JPanel();

getContentPane().add(panel,BorderLayout.SOUTH);

panel.add(new JLabel("A: "));

aTextField = new JTextField("A4",10);

panel.add(aTextField);

panel.add(new JLabel("B: "));

bTextField = new JTextField("B4",10);

panel.add(bTextField);

final JButton addButton = new JButton("添加"); //添加按钮

addButton.addActionListener(new ActionListener(){//添加事件

public void actionPerformed(ActionEvent e){

String []rowValues = {aTextField.getText(),bTextField.getText()};

tableModel.addRow(rowValues); //添加一行

int rowCount = table.getRowCount() +1; //行数加上1

aTextField.setText("A"+rowCount);

bTextField.setText("B"+rowCount);

}

});

panel.add(addButton);

final JButton updateButton = new JButton("修改"); //修改按钮

updateButton.addActionListener(new ActionListener(){//添加事件

public void actionPerformed(ActionEvent e){

int selectedRow = table.getSelectedRow();//获得选中行的索引

if(selectedRow!= -1) //是否存在选中行

{

//修改指定的值：

tableModel.setValueAt(aTextField.getText(), selectedRow, 0);

tableModel.setValueAt(bTextField.getText(), selectedRow, 1);

//table.setValueAt(arg0, arg1, arg2)

}

}

});

panel.add(updateButton);

final JButton delButton = new JButton("删除");

delButton.addActionListener(new ActionListener(){//添加事件

public void actionPerformed(ActionEvent e){

int selectedRow = table.getSelectedRow();//获得选中行的索引

if(selectedRow!=-1) //存在选中行

{

tableModel.removeRow(selectedRow); //删除行

}

}

});

panel.add(delButton);

}

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

JTableDefaultTableModelTest jTableDefaultTableModelTest = new JTableDefaultTableModelTest();

jTableDefaultTableModelTest.setVisible(true);

}

}