Question

我试图运行我在日食中制作的程序。已将其导出为可运行的jar文件，并将其保存在桌面上，但当我尝试从命令提示符运行它时，它说：＆＃34;错误：无法访问jarfile Matador.jar＆＃34;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class Password implements ActionListener {
private String Username = "hudhud";
private String Password = "fitness";
private JTextField txtUsername;
private JTextField txtPassword;

public static void main(String[] args){
    Password gui = new Password();
    gui.go();
}
public void go(){
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel();
    JLabel lblUsername = new JLabel("Username:");   
    JLabel lblPassword = new JLabel("Password:");
    txtUsername = new JTextField(20);
    txtPassword = new JTextField(20);
    JButton btnLogin = new JButton("Login");
    btnLogin.addActionListener(this);
    JButton btnCancel = new JButton("Cancel");
    btnCancel.addActionListener(this);


    panel.add(lblUsername);
    panel.add(txtUsername);
    panel.add(lblPassword);
    panel.add(txtPassword);        
    panel.add(btnLogin);
    panel.add(btnCancel);
    frame.getContentPane().add(BorderLayout.CENTER,panel);



    frame.setSize(300,300);
    frame.setVisible(true);


}
@Override
public void actionPerformed(ActionEvent e) {
    String cmd = e.getActionCommand();
    String msg;
    if (cmd.equals("Login")) {
        if (txtUsername.getText().equals(Username) && txtPassword.getText().equals(Password)) {
            msg = "Welcome";
        } else {
            msg = "Login denied. The username or password is incorrect";
        }
    } else {
        msg = "Where are you going, couldn't you guess the password and username??";
    }
    JOptionPane.showMessageDialog(null, msg);
}

}

Answer 1

这样做：

java -jar <jar-file-name>.jar

请确保您在正确的目录中。

重复问题： Run jar file in command prompt

Answer 2

该错误意味着无法找到jar文件。您必须像这样指定jar的路径：

java -jar path/To/Your/Jar/Matador.jar

Answer 3

项目结构：

c:\project\Matador.jar

启动命令提示符，
cd c:\project
java -jar Matador.jar

无法在命令提示符下运行jar文件

3 个答案: