Java 如何在netbeans中从sql中删除数据
我想添加一个删除按钮,当用户单击表中的数据并单击删除时,数据将被删除。如何添加“删除”按钮的代码?我必须在“删除”按钮下或其他任何地方添加任何内容吗Java 如何在netbeans中从sql中删除数据,java,sql,jdbc,netbeans,Java,Sql,Jdbc,Netbeans,我想添加一个删除按钮,当用户单击表中的数据并单击删除时,数据将被删除。如何添加“删除”按钮的代码?我必须在“删除”按钮下或其他任何地方添加任何内容吗 包装仓库; 导入java.sql.*; 导入java.util.Vector; 导入java.sql.Connection; 导入java.sql.DriverManager; 导入java.sql.PreparedStatement; 导入java.sql.SQLException; 导入java.util.logging.Level; 导入j
包装仓库;
导入java.sql.*;
导入java.util.Vector;
导入java.sql.Connection;
导入java.sql.DriverManager;
导入java.sql.PreparedStatement;
导入java.sql.SQLException;
导入java.util.logging.Level;
导入java.util.logging.Logger;
导入javax.swing.JFrame;
导入javax.swing.JOptionPane;
/**
*
*@作者莎拉
*/
公共类扩展javax.swing.JFrame{
私有静态最终字符串DB_DRIVER=“oracle.jdbc.DRIVER.OracleDriver”;
私有静态最终字符串DB_CONNECTION=“jdbc:oracle:thin:@localhost:1521:XE”;
私有静态最终字符串DB_USER=“SARAH”;
私有静态最终字符串DB_PASSWORD=“12345”;
/**
*创建新表单托盘
*/
公共托盘(){
初始化组件();
矢量数据;
向量头;
数据=getPallet();
header=新向量();
标题。添加(“托盘ID”);
标题。添加(“数量”);
setModel(新的javax.swing.table.DefaultTableModel(数据、,
页眉);
}
/**
*从构造函数中调用此方法来初始化表单。
*警告:不要修改此代码。此方法的内容始终为
*由表单编辑器重新生成。
*/
@抑制警告(“未选中”)
//
私有组件(){
jLabel1=newjavax.swing.JLabel();
palletid=newjavax.swing.JLabel();
qtty=newjavax.swing.JLabel();
PalletText=newjavax.swing.JTextField();
QttyText=newjavax.swing.JTextField();
addbutton=newjavax.swing.JButton();
jScrollPane1=newjavax.swing.JScrollPane();
PaTable=newjavax.swing.JTable();
exitbutton=newjavax.swing.JButton();
delete=newjavax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText(“托盘”);
palletid.setText(“托盘ID”);
数量设置文本(“数量”);
addbutton.setText(“添加”);
addbutton.addActionListener(新java.awt.event.ActionListener(){
public void actionPerformed(java.awt.event.ActionEvent evt){
addbuttonActionPerformed(evt);
}
});
setModel(新的javax.swing.table.DefaultTableModel(
新对象[][]{
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null},
{null,null}
},
新字符串[]{
“托盘”、“数量”
}
));
jScrollPane1.setViewportView(可扩展);
setText(“退出”);
exitbutton.addActionListener(新java.awt.event.ActionListener(){
public void actionPerformed(java.awt.event.ActionEvent evt){
ExitButtoActionExecuted(evt);
}
});
删除.setText(“删除”);
javax.swing.GroupLayout=newjavax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(布局);
layout.setHorizontalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,layout.createSequentialGroup()
.addGap(0,31,短的最大值)
.addComponent(jScrollPane1,javax.swing.GroupLayout.PREFERRED_SIZE,357,javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(143143143)
.addComponent(jLabel1,javax.swing.GroupLayout.PREFERRED_SIZE,89,javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(59,59,59)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.training)
.addComponent(qtty)
.addComponent(palletid))
.addGap(86,86,86)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING,false)
.addComponent(PalletText,javax.swing.GroupLayout.DEFAULT_SIZE,68,Short.MAX_值)
.addComponent(QttyText))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED,javax.swing.GroupLayout.DEFAULT\u SIZE,Short.MAX\u值)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(exitbutton、javax.swing.GroupLayout.Alignment.Training)
.addComponent(addbutton,javax.swing.GroupLayout.Alignment.training)))
.addContainerGap())
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,layout.createSequentialGroup()
.addGap(0,0,短.MAX_值)
.addComponent(删除)
delete.setText("Delete");
delete.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
deletebuttonActionPerformed(evt)("Delete");
}
});
private void deletebuttonActionPerformed(java.awt.event.ActionEvent evt) {
try(Connection con = getDBConnection();
PreparedStatemet ps = con.prepareStatement("DELETE FROM PALLET")) {
int numDeleted = ps.executeUpdate();
System.out.println(""+numDeleted + " items were removed from PALLET");
}
}
protected void deletePallet(int palletId) {
try (Connection con = getDBConnection();
PreparedStatemet ps = con.prepareStatement("DELETE FROM PALLET WHERE PALLET_ID = ?")) {
ps.setInt(1, palletId);
int numDeleted = ps.executeUpdate();
System.out.println("" + numDeleted + " items were removed from PALLET");
}
}