我的Java Chatbot代码不起作用,我不知道为什么

时间:2017-08-08 13:49:58

标签: java jframe jtextfield jtextarea

我是Java新手,这是我的聊天机器人代码的一部分。当我从createQuestions()运行showMenu()时,它似乎无效。 createQuestion()做的是让用户创建问题并与自己聊天。

问题出在这里

欢迎!

选择您的选项:

1)添加问题

2)聊天(你需要先添加问题)

3)了解有关城镇的更多信息

4)退出

你:1

创建问题...如果您想停止,请输入'结束' 题? (它不会暂停,因为我需要阅读用户输入的内容并将其存储为问题)

你:

您想要多少回复? :

        //Start of ShowMenu():
        txtChat.append("\nWelcome!\nChoose your option:");
        txtChat.append("\n1)Add Questions\n2)Chat(You need to add question first)\n3)Know more about Towns\n4)Exit\n");
        txtChat.append(">>>\n");

        txtEnter.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                showMenu();
            }//end actionPerformed

        });//end actionListener

    }//end TestinChatBot

    public void showMenu() {
        String choice;

        do {

            switch (choice) {
                case "1":
                    createQuestions();
                    break;
                case "2":
                    startChat();
                    break;
                case "3":
                    knowtowns();
                    break;
                case "4":
                    txtChat.append("\nFinally! I can play MapleStory! Sayonara!");
                    System.exit(0);
                    break;
                default:
                    break;
            }

        } while (!choice.equals("4"));

    }

    public void createQuestions() {
        txtChat.append("\nCreating questions...Type 'end' if you wish to stop\n");

        do {

            txtChat.append("Question? \n");
            q = txtEnter.getText();
            txtChat.append("You: " + q + "\n");

            if (!q.contains("end")) {
                txtChat.append("How many responses do you want? : ");
                noOfResponses = Integer.parseInt(txtEnter.getText());
                txtEnter.setText("");
                String r[] = new String[noOfResponses];
                if (noOfResponses > 0) {
                    for (int i = 0; i < noOfResponses; i++) {
                        txtChat.append("Response " + (i + 1) + ": ");
                        r[i] = txtEnter.getText();
                        txtEnter.setText("");

                    }
                    Chat newChat = new Chat(q, r);
                    addQuestion(newChat);
                    txtChat.append("\n" + Arrays.toString(r));
                } else {
                    txtChat.append("Please enter a number bigger than 0");

                }
            } else {
                showMenu();
            }
        } while (q.equalsIgnoreCase("end") == false);
    }

错误就是这些

Exception in thread "AWT-EventQueue-0" java.lang.NumberFormatException: For input string: ""

1 个答案:

答案 0 :(得分:1)

如果txtEnter.getText()返回空白,则会收到:

 java.lang.NumberFormatException: For input string: ""

因为空格无法转换为数字。

因此,您应该检查以确保txtEnter.getText()不会返回空白。