使用追加字符从字符串返回NULL

Question

String dexVersion返回null

我尝试了很多东西，比如取一个字符串并附加一个readData [] char并且它工作正常，我也试着看看它是否是字符而不是字符，但结果是不确定的

import java.io.*;
import java.net.*;
import java.lang.*;
import java.util.*;

class main {
    public static void main(String args[]) {

        String version = new String("1.0 (Alpha)");

        main main = new main();
        dataHandling data = new dataHandling();
        boolean doneProcessing = false;
        int x = 0,y = 0;
        String dexVersion = new String("v:");
        String pokemon[][] = new String[700][10];
        System.out.println(":");
        System.out.println("POKeUTILITY:MAIN_THREAD_STARTED_IN_STATIC_METHOD_MAIN");
        System.out.println("POKeUTILITY:STARTING_VERSION=" + version);
        System.out.println("POKeUTILITY:DOWNLOADING_POKeDEX_DATA");
        data.download();
        System.out.println("POKeUTILITY:READING_POKeDEX_DATA");
        char readData[] = data.read();
        System.out.println("POKeUTILITY:PROCESSING_POKeDEX_DATA");
        while (doneProcessing = false) {
            if ((readData[x]) == '{') {
                x++;
                while ((readData[x]) != '}') {
                    dexVersion += readData[x];
                    x++;
                }
            }
//            if ((readData[x]) == '[') {
//                x++;
//                while ((readData[x]) != ']') {
//                    dexVersion += readData[x];
//                    x++;
//                }
//            }
            if ((readData[x]) == '%') doneProcessing = true;
            x++;
        }
        System.out.println(dexVersion + ".");
    }
}
class dataHandling {
    public void download() {
        BufferedInputStream dFile;
        FileOutputStream wFile;
        try {
            dFile = new BufferedInputStream(new URL("http://www.harry.technology/pokedex").openStream());
            wFile = new FileOutputStream("pokedex");
            int x = 0,y = 0;
            while ((x = dFile.read()) != -1) {
                wFile.write(x);
            }
            wFile.close();
            dFile.close();
        } catch (IOException e) {
            System.out.println("POKeUTILITY:ERROR_" + e);
            System.exit(0);
        }
    }
    public char[] read() {
        int x = 0,y = 0;
        char input[] = new char[2000];
        String output = new String("");
        try {
            FileReader file = new FileReader("pokedex");
            while ((x = file.read()) != -1) {
                input[y] = convert(x);
                y++;
            }
            file.close();
        } catch (IOException e) {
            System.out.println("POKeUTILITY:ERROR_" + e);
            System.exit(0);
        }
        return input;
    }
    public char convert(int a) {
        switch (a) {
            ASCII SWITCH STATEMENT (left out because of length)
        }
    }
}

这是文件＆＃34; pokedex＆＃34;：

{1.0}
[001,Bulbasaur]
%

您可以访问：http://www.harry.technology/pokedex

在我的服务器上查看