阵列“越界"，即，阵列越界越好. [英] Array "out of bounds"

问题描述

我正在使用String [3]数组存储从4个JTextFields获得的用户输入 然后，我将数组输出到txt文件:

I'm using an array of String[3] to store user input which is got from 4 JTextFields I then output the array to a txt file:

String[] userInfo = new String[3];
    userInfo[0] = sourceTextField.getText();
    userInfo[1] = usernameTextField.getText();
    userInfo[2] = passwordTextField.getText();
    userInfo[3] = emailTextField.getText();
    for (String userInfo1 : userInfo) {
        try 
        {
            BufferedWriter writer = new BufferedWriter(new FileWriter("C:\\Users\\Peace Infinity\\Desktop\\[programming]Projects\\DataFiles\\PasswordRepository.txt", true));
            String s;
            s = userInfo1;
            writer.write(s + " ");
            writer.flush();
        }catch (IOException ex) 
        {
            Logger.getLogger(ADD_dialogBox_v1.class.getName()).log(Level.SEVERE, null, ex);
            JOptionPane.showMessageDialog(null, "Error processing file!");
        }
    }

有人可以告诉我为什么我遇到异常数组索引超出范围"吗? 谢谢

Can someone tell me why I'm getting exception "array index out of bounds"? Thank you

推荐答案

解决方案非常简单

String[] userInfo = new String[4];

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