package com.test;
import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;
import java.awt.*;
import java.util.Vector;
/**
* @Author:xiexu
* @Date:2023/12/8 14:53
*/
public class JtableTest extends JFrame {
public JtableTest() {
super("测试Jtable");
Vector<String> column = new Vector<>();
column.addElement("编号");
column.addElement("姓名");
column.addElement("学号");
column.addElement("家乡");
column.addElement("语文");
column.addElement("数学");
column.addElement("英语");
column.addElement("总分");
Vector<Vector<Object>> data = new Vector<>();
Vector<Object> rowVector1 = new Vector<>();
rowVector1.addElement("1");
rowVector1.addElement("张三");
rowVector1.addElement("2112001136");
rowVector1.addElement("江苏");
rowVector1.addElement("89");
rowVector1.addElement("92");
rowVector1.addElement("80");
rowVector1.addElement("261");
Vector<Object> rowVector2 = new Vector<>();
rowVector2.addElement("2");
rowVector2.addElement("李四");
rowVector2.addElement("2112001137");
rowVector2.addElement("北京");
rowVector2.addElement("89");
rowVector2.addElement("92");
rowVector2.addElement("85");
rowVector2.addElement("266");
data.addElement(rowVector1);
data.addElement(rowVector2);
// tableModel : 和 jtable 关联后, 只需要更新 model 就能把数据的变化反应到jtable中;
DefaultTableModel tableModel = new DefaultTableModel();
tableModel.setDataVector(data, column);
// Jtable
JTable jTable = new JTable(tableModel);
// 设置表头的样式
JTableHeader tableHeader = jTable.getTableHeader();
tableHeader.setFont(new Font("微软雅黑", Font.BOLD, 18));
tableHeader.setForeground(Color.red);
// 设置表格体的样式
jTable.setFont(new Font("微软雅黑", Font.PLAIN, 14));
jTable.setForeground(Color.black);
jTable.setGridColor(Color.black); // 设置表格线颜色
jTable.setRowHeight(30); // 设置行高
// 设置多行选择
jTable.getSelectionModel().setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
// 获取内容面板
Container contentPane = getContentPane();
JScrollPane jScrollPane = new JScrollPane(jTable); // jtable 需要放在JScrollPane面板上,放在内容面板上默认是不展示列头部的
contentPane.add(jScrollPane);
setSize(600, 400);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
public static void main(String[] args) {
new JtableTest();
}
}
文章来源地址https://www.toymoban.com/news/detail-756191.html
上述的代码已经可以实现表格以及数据在内容面板上的展现,但还有很多可以优化的地方
1. 表格中的内容不能修改 并且 每一列的头部 不会因为数据的变化而变化,是固定不变的
在外部重新自定义一个方法
// 自定义方法
class StudentTableModel extends DefaultTableModel {
static Vector<String> column = new Vector<>();
static {
column.addElement("编号");
column.addElement("编号");
column.addElement("姓名");
column.addElement("学号");
column.addElement("家乡");
column.addElement("语文");
column.addElement("数学");
column.addElement("英语");
column.addElement("总分");
}
public StudentTableModel() {
super(null, column);
}
private static StudentTableModel studentTableModel = new StudentTableModel(); // 饿汉式
public static StudentTableModel assembleModel(Vector<Vector<Object>> data){ // 组装数据 -> 肯定有返回对象,即要设置返回类型
studentTableModel.setDataVector(data,column);
return studentTableModel;
}
@Override
public boolean isCellEditable(int row, int column) {
return false;
}
}
基于上述自定义的方法,那么之前的代码就可以修改下了
package com.test;
import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;
import java.awt.*;
import java.util.Vector;
/**
* @Author:xiexu
* @Date:2023/12/8 14:53
*/
public class JtableTest extends JFrame {
public JtableTest() {
super("测试Jtable");
// Vector<String> column = new Vector<>();
// column.addElement("编号");
// column.addElement("姓名");
// column.addElement("学号");
// column.addElement("家乡");
// column.addElement("语文");
// column.addElement("数学");
// column.addElement("英语");
// column.addElement("总分");
Vector<Vector<Object>> data = new Vector<>();
Vector<Object> rowVector1 = new Vector<>();
rowVector1.addElement("1");
rowVector1.addElement("张三");
rowVector1.addElement("2112001136");
rowVector1.addElement("江苏");
rowVector1.addElement("89");
rowVector1.addElement("92");
rowVector1.addElement("80");
rowVector1.addElement("261");
Vector<Object> rowVector2 = new Vector<>();
rowVector2.addElement("2");
rowVector2.addElement("李四");
rowVector2.addElement("2112001137");
rowVector2.addElement("北京");
rowVector2.addElement("89");
rowVector2.addElement("92");
rowVector2.addElement("85");
rowVector2.addElement("266");
data.addElement(rowVector1);
data.addElement(rowVector2);
// tableModel : 和 jtable 关联后, 只需要更新 model 就能把数据的变化反应到jtable中;
// DefaultTableModel tableModel = new DefaultTableModel();
// tableModel.setDataVector(data, column);
// 调用静态的方法
StudentTableModel studentTableModel = StudentTableModel.assembleModel(data);
// Jtable
JTable jTable = new JTable(studentTableModel);
// 设置表头的样式
JTableHeader tableHeader = jTable.getTableHeader();
tableHeader.setFont(new Font("微软雅黑", Font.BOLD, 18));
tableHeader.setForeground(Color.red);
// 设置表格体的样式
jTable.setFont(new Font("微软雅黑", Font.PLAIN, 14));
jTable.setForeground(Color.black);
jTable.setGridColor(Color.black); // 设置表格线颜色
jTable.setRowHeight(30); // 设置行高
// 设置多行选择
jTable.getSelectionModel().setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
// 获取内容面板
Container contentPane = getContentPane();
JScrollPane jScrollPane = new JScrollPane(jTable); // jtable 需要放在JScrollPane面板上,放在内容面板上默认是不展示列头部的
contentPane.add(jScrollPane);
setSize(600, 400);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
public static void main(String[] args) {
new JtableTest();
}
}
// 自定义方法
class StudentTableModel extends DefaultTableModel {
static Vector<String> column = new Vector<>();
static {
column.addElement("编号");
column.addElement("编号");
column.addElement("姓名");
column.addElement("学号");
column.addElement("家乡");
column.addElement("语文");
column.addElement("数学");
column.addElement("英语");
column.addElement("总分");
}
public StudentTableModel() {
super(null, column);
}
private static StudentTableModel studentTableModel = new StudentTableModel(); // 饿汉式
public static StudentTableModel assembleModel(Vector<Vector<Object>> data){ // 组装数据 -> 肯定有返回对象,即要设置返回类型
studentTableModel.setDataVector(data,column);
return studentTableModel;
}
@Override
public boolean isCellEditable(int row, int column) {
return false;
}
// 添加get方法 获取列名
public static Vector<String> getColumn() {
return column;
}
}
文章来源:https://www.toymoban.com/news/detail-756191.html
2. 设置表格列的渲染方式
自定义一个方法并继承 DefaultTableCellRenderer
class StudentCellRender extends DefaultTableCellRenderer {
// 在每一行每一列显示之前都会调用
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if (row % 2 == 0 ) {
setBackground(Color.LIGHT_GRAY);
} else {
setBackground(Color.WHITE);
}
setHorizontalAlignment(DefaultTableCellRenderer.CENTER); // 设置水平居中
return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}
}
设置渲染样式
//设置表格列的渲染方式
Vector<String> column = StudentTableModel.getColumn(); // 需要添加get方法
StudentCellRender studentCellRender = new StudentCellRender();
for (int i=0; i<column.size(); i++) {
TableColumn c = jTable.getColumn(column.get(i));
c.setCellRenderer(studentCellRender);
if (i == 0) {
c.setPreferredWidth(50);
c.setResizable(false); // 设置第一列宽度不可变
}
}
完整代码:
package com.test;
import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;
import java.awt.*;
import java.util.Vector;
/**
* @Author:xiexu
* @Date:2023/12/8 14:53
*/
public class JtableTest extends JFrame {
public JtableTest() {
super("测试Jtable");
// Vector<String> column = new Vector<>();
// column.addElement("编号");
// column.addElement("姓名");
// column.addElement("学号");
// column.addElement("家乡");
// column.addElement("语文");
// column.addElement("数学");
// column.addElement("英语");
// column.addElement("总分");
Vector<Vector<Object>> data = new Vector<>();
Vector<Object> rowVector1 = new Vector<>();
rowVector1.addElement("1");
rowVector1.addElement("张三");
rowVector1.addElement("2112001136");
rowVector1.addElement("江苏");
rowVector1.addElement("89");
rowVector1.addElement("92");
rowVector1.addElement("80");
rowVector1.addElement("261");
Vector<Object> rowVector2 = new Vector<>();
rowVector2.addElement("2");
rowVector2.addElement("李四");
rowVector2.addElement("2112001137");
rowVector2.addElement("北京");
rowVector2.addElement("89");
rowVector2.addElement("92");
rowVector2.addElement("85");
rowVector2.addElement("266");
data.addElement(rowVector1);
data.addElement(rowVector2);
// tableModel : 和 jtable 关联后, 只需要更新 model 就能把数据的变化反应到jtable中;
// DefaultTableModel tableModel = new DefaultTableModel();
// tableModel.setDataVector(data, column);
// 调用静态的方法
StudentTableModel studentTableModel = StudentTableModel.assembleModel(data);
// Jtable
JTable jTable = new JTable(studentTableModel);
// 设置表头的样式
JTableHeader tableHeader = jTable.getTableHeader();
tableHeader.setFont(new Font("微软雅黑", Font.BOLD, 18));
tableHeader.setForeground(Color.red);
// 设置表格体的样式
jTable.setFont(new Font("微软雅黑", Font.PLAIN, 14));
jTable.setForeground(Color.black);
jTable.setGridColor(Color.black); // 设置表格线颜色
jTable.setRowHeight(30); // 设置行高
// 设置多行选择
jTable.getSelectionModel().setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
//设置表格列的渲染方式
Vector<String> column = StudentTableModel.getColumn();
StudentCellRender studentCellRender = new StudentCellRender();
for (int i=0; i<column.size(); i++) {
TableColumn c = jTable.getColumn(column.get(i));
c.setCellRenderer(studentCellRender);
if (i == 0) {
c.setPreferredWidth(50);
c.setResizable(false);
}
}
// 获取内容面板
Container contentPane = getContentPane();
JScrollPane jScrollPane = new JScrollPane(jTable); // jtable 需要放在JScrollPane面板上,放在内容面板上默认是不展示列头部的
contentPane.add(jScrollPane);
setSize(600, 400);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
public static void main(String[] args) {
new JtableTest();
}
}
class StudentCellRender extends DefaultTableCellRenderer {
// 在每一行每一列显示之前都会调用
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if (row % 2 == 0 ) {
setBackground(Color.LIGHT_GRAY);
} else {
setBackground(Color.WHITE);
}
setHorizontalAlignment(DefaultTableCellRenderer.CENTER); // 设置水平居中
return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}
}
// 自定义方法
class StudentTableModel extends DefaultTableModel {
static Vector<String> column = new Vector<>();
static {
column.addElement("编号");
column.addElement("编号");
column.addElement("姓名");
column.addElement("学号");
column.addElement("家乡");
column.addElement("语文");
column.addElement("数学");
column.addElement("英语");
column.addElement("总分");
}
public StudentTableModel() {
super(null, column);
}
private static StudentTableModel studentTableModel = new StudentTableModel(); // 饿汉式
public static StudentTableModel assembleModel(Vector<Vector<Object>> data){ // 组装数据 -> 肯定有返回对象,即要设置返回类型
studentTableModel.setDataVector(data,column);
return studentTableModel;
}
@Override
public boolean isCellEditable(int row, int column) {
return false;
}
// 添加get方法 获取列名
public static Vector<String> getColumn() {
return column;
}
}
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