我有一个简单的java应用程序,我已经在Netbeans中运行,如下所示。我已经在Netbeans中添加了sqlite-jdbc.jar来访问数据库,但是我想知道我是否可以使用命令提示符中的.jar,如果是这样的话?感谢。
import java.io.*;
import java.sql.Connection;
import java.sql.DriverManager;
import javax.swing.JOptionPane;
import java.sql.*;
import javax.swing.*;
/**
*
* @author James
*/
public class TestProj{
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
ConnectDb();
}
public static Connection ConnectDb(){
try
{
Class.forName("org.sqlite.JDBC");
Connection conn = DriverManager.getConnection("jdbc:sqlite:
C:\\Users\\James\\Documents
\\NetBeansProjects\\TestProj\\TestProj.sqlite");
System.out.println("Connection opened successfully!");
Statement stat = conn.createStatement();
String sql = "SELECT kE100 FROM customers" +
" WHERE phoneNo = 873333333";
ResultSet rs = stat.executeQuery(sql);
System.out.println("name = " + rs.getString("kE100"));
conn.close();
return conn;
}catch(Exception e){
System.out.println("No Connection!");
return null;
}
}
}
C:\ Users \ James \ Documents \ NetBeansProjects \ TestKamarad \ src \ testkamarad> javac -cp " C:/ Users / James / Desktop / Installers Etc / sqlite-jdbc-3.7.2.jar;" TestKamarad.java
C:\ Users \ James \ Documents \ NetBeansProjects \ TestKamarad \ src \ testkamarad> java -cp" C:/ Users / James / Desktop / Installers Etc / sqlite-jdbc-3.7.2.jar;" TestKamarad 线程" main"中的例外情况java.lang.NoClassDefFoundError:TestKamarad(错误的na 我:testkamarad / TestKamarad) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) 在java.net.URLClassLoader.access $ 100(未知来源) 在java.net.URLClassLoader $ 1.run(未知来源) 在java.net.URLClassLoader $ 1.run(未知来源) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher $ AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) 在sun.launcher.LauncherHelper.checkAndLoadMain(未知来源)
答案 0 :(得分:0)
如何从命令行运行.jar?这很简单,只需键入:
java -jar foo\bar.jar