怎么会事啊 这是 我想从jtable中提取一列的所有数值,怎么取啊,大虾们帮忙啊 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 就是如下一个jtable:Barcode Type QuantityCardline Carton 12 Pardline Pallet 40 Car Carton 50 我现在只想取 :Barcode的内容,就是Cardline ,Pardline,Car这几个值,该怎么写代码啊,谢谢最好能有代码 提示,谢谢 package swingtest;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.*;import javax.swing.table.*;public class JTableTest { private JFrame jf; private JTable table; private JScrollPane jsp; private static Student[] arr ={ //我不知道你是怎么取数据,取那数据,这里我 //把自己创建的数据赋予arr,你用的话把得到的数据赋予给他 //我这里为了方便写的数组,你最好用集合类来接数据 new Student("zhangsan","male",21,89), new Student("lisi","male",21,89), new Student("wangwu","female",21,89), new Student("zhaoliu","female",21,89), new Student("qianqi","female",21,89), new Student("liuba","male",21,89), new Student("tangliang","male",21,89)};; private JButton ok; public JTableTest(){ jf=new JFrame("JTable测试"); ok = new JButton("确定"); ok.addActionListener(new ActionListener(){ //为OK做的按钮时间监听,当鼠标选中一列 点击确定 打印出这一列的所有的值 public void actionPerformed(ActionEvent e) { int i = table.getSelectedColumn(); if(i == -1){ return; } StringBuilder sb = new StringBuilder(); for(Student s : JTableTest.arr){ sb.append(s.column(i)); sb.append("\n"); } System.out.println(sb.toString()); } }); table=new JTable(new TableModelForArrayList(arr)); table.setCellSelectionEnabled(true); jsp=new JScrollPane(); jsp.setViewportView(table); jf.add(ok,BorderLayout.NORTH); jf.add(jsp,BorderLayout.CENTER); jf.setSize(640,480); jf.setVisible(true); jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args) { JTableTest jt = new JTableTest(); }}//TableModelForArrayList.javaclass TableModelForArrayList extends AbstractTableModel{ private static final long serialVersionUID = 1L; private Student[] arr; public TableModelForArrayList(Student[] arr){ this.arr=arr; } @Override public String getColumnName(int index) { switch(index){ case 0:return "姓名"; case 1:return "性别"; case 2:return "年龄"; case 3:return "成绩"; default:return null; } } public int getColumnCount() { return 4; } public int getRowCount() { return arr.length; } public Object getValueAt(int row, int col) { Student s= arr[row]; switch(col){ case 0:return s.getName(); case 1:return s.getGender(); case 2:return s.getAge(); case 3:return s.getScore(); } return null; }}//student.javaclass Student{ private String name; private String gender; private int age; private int score; public Student(String name, String gender, int age, int score) { super(); this.name = name; this.gender = gender; this.age = age; this.score = score; } public Object column(int x){ switch(x){ case 0: return name; case 1: return gender; case 2: return age; case 3: return score; } return null; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getGender() { return gender; } public void setGender(String gender) { this.gender = gender; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public int getScore() { return score; } public void setScore(int score) { this.score = score; }}Output:当你用鼠标选取某一行后 点击确定按纽,打印出所用行的值,我这里做的是按纽事件监听,你可以改为你想要的事件监听~ java写入东西为什么是用输出流呢,在线等 volatile 的问题。 java连接数据库最好的方法 加减乘除 改成JAVA代码 大家给我举点傻瓜代码的例子,最近我要练下逻辑,如输出素数等。。。。 java问题 做过类似守护线程的给点建议。谢谢。 请问哪里有JCreator LE V2.50 Build 008的中文帮助!谢谢! 各位大虾!!在java下怎么用ping命令?谢谢! 求救:设定Frame大小 关于java连接数据库的问题 java基础问题
Barcode Type Quantity
Cardline Carton 12
Pardline Pallet 40
Car Carton 50
我现在只想取 :Barcode的内容,就是Cardline ,Pardline,Car
这几个值,该怎么写代码啊,谢谢
最好能有代码 提示,谢谢
package swingtest;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.table.*;
public class JTableTest {
private JFrame jf;
private JTable table;
private JScrollPane jsp;
private static Student[] arr ={ //我不知道你是怎么取数据,取那数据,这里我
//把自己创建的数据赋予arr,你用的话把得到的数据赋予给他
//我这里为了方便写的数组,你最好用集合类来接数据
new Student("zhangsan","male",21,89),
new Student("lisi","male",21,89),
new Student("wangwu","female",21,89),
new Student("zhaoliu","female",21,89),
new Student("qianqi","female",21,89),
new Student("liuba","male",21,89),
new Student("tangliang","male",21,89)};;
private JButton ok;
public JTableTest(){
jf=new JFrame("JTable测试");
ok = new JButton("确定");
ok.addActionListener(new ActionListener(){
//为OK做的按钮时间监听,当鼠标选中一列 点击确定 打印出这一列的所有的值
public void actionPerformed(ActionEvent e) {
int i = table.getSelectedColumn();
if(i == -1){
return;
}
StringBuilder sb = new StringBuilder();
for(Student s : JTableTest.arr){
sb.append(s.column(i));
sb.append("\n");
}
System.out.println(sb.toString());
}
});
table=new JTable(new TableModelForArrayList(arr));
table.setCellSelectionEnabled(true);
jsp=new JScrollPane();
jsp.setViewportView(table);
jf.add(ok,BorderLayout.NORTH);
jf.add(jsp,BorderLayout.CENTER);
jf.setSize(640,480);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
JTableTest jt = new JTableTest();
}
}//TableModelForArrayList.java
class TableModelForArrayList extends AbstractTableModel{
private static final long serialVersionUID = 1L;
private Student[] arr;
public TableModelForArrayList(Student[] arr){
this.arr=arr;
}
@Override
public String getColumnName(int index) {
switch(index){
case 0:return "姓名";
case 1:return "性别";
case 2:return "年龄";
case 3:return "成绩";
default:return null;
}
} public int getColumnCount() {
return 4;
} public int getRowCount() {
return arr.length;
} public Object getValueAt(int row, int col) {
Student s= arr[row];
switch(col){
case 0:return s.getName();
case 1:return s.getGender();
case 2:return s.getAge();
case 3:return s.getScore();
}
return null;
}
}
//student.java
class Student{
private String name;
private String gender;
private int age;
private int score;
public Student(String name, String gender, int age, int score) {
super();
this.name = name;
this.gender = gender;
this.age = age;
this.score = score;
}
public Object column(int x){
switch(x){
case 0: return name;
case 1: return gender;
case 2: return age;
case 3: return score;
}
return null;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public int getScore() {
return score;
}
public void setScore(int score) {
this.score = score;
}
}Output:
当你用鼠标选取某一行后 点击确定按纽,打印出所用行的值,我这里做的是按纽事件监听,你可以改为你想要的事件
监听~