读取文件时非法开始表达

Question

我在String readFileIntoString（字符串路径）中收到错误，因为有人告诉我该做什么，非法启动表达式。

public static void main(String[] args) {

//public class PreProcess {

    // Read a file into a string. Takes file path, returns string

    /**
     *
     * @param path
     * @return
     */
    public String readFileIntoString(String path) {
        char[] line = new char[1024];
        StringBuilder dataString;
        dataString = new StringBuilder(5000);

        try {
            try (BufferedReader input = new BufferedReader(new FileReader(path))) {
                while (true) {
                    int readLength = input.read(line);
                    if (readLength == -1)
                        break;
                    dataString.append(line, 0, readLength);
                }
            }
            return dataString.toString();
        }
        catch (IOException e) {
            return " ";
        }
    }
}  

Answer 1

方法内部方法被视为illegal start of expression

public static void main(String[] args) {
    public String readFileIntoString(String path) {
    }
}

移动

    public String readFileIntoString(String path) {} 

到main()

的一边

Answer 2

1. 该方法应在main()之外。
2. 在内部尝试{}
之后，您需要有一个catch {}块或一个finally {}块

try{}块应始终跟在catch{}或finally{}

之后