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:

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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);

}

}

删除二维数组中的满行 用java编写代码

//删除元素为全1的行，不知道是不是你要的功能

public class Demo {

public static void main(String[] args) {

int[][] a={

{0,0,0,0,0},

{0,1,0,1,0},

{1,1,1,1,1},

{1,1,1,1,1},

{0,1,1,1,1},

{1,1,1,1,1}

};

len=a.length;

System.out.println("删除满行前：");

output(a);

cutFullLine(a);

System.out.println("删除满行后：");

output(a);

}

static void output(int[][] a) {

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

for(int j=0;ja[i].length;j++) {

System.out.print(""+a[i][j]+" ");

}

System.out.println();

}

}

static void cutFullLine(int[][] a) {

for(int i=0;ilen;) {

if(isFull(a[i])) {

for(int j=i+1;jlen;j++) {

a[j-1]=a[j];

len--;

}

}

else {

i++;

}

}

}

static boolean isFull(int[] line) {

boolean r=true;

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

if(1!=line[i]) {

r=false;

break;

}

}

return r;

}

static int len;

}

java 文件中删除一行（或某个字符）

用“”替换文件中的内容达到删除目的

import java.io.InputStream;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileReader;

import java.io.FileWriter;

import java.util.Scanner;

import java.io.FileNotFoundException;

import java.io.IOException;

public class zifutihuan

{

protected static void rep(String ch)

{

BufferedReader bis = null;

FileWriter bos = null;

String s = null;

   try

   { 

 bis = new BufferedReader(new FileReader("1.txt"));

  bos = new FileWriter("2.txt");

while(null != (s = bis.readLine()))

   {

    s = s.replaceAll(ch,"");

    System.out.println(s);

    s= s+"\r\n";

bos.write(s);

    }

 bos.close();

  bis.close();

  s = null;

}

catch(FileNotFoundException e)

{

System.out.println("未找到文件\n");

}

catch(IOException ee)

{

System.out.println("aaa");

}

}

public static void main(String args[])

{ 

rep("123");

}

}