Question

我有一个字符串数组：

String [] word = {“atom”，“electron”，“oxyegn”，“explosion”，“combustion”，“flask”，“laser”，“molecule”，“ion”，“bond”}; \

但我需要从我需要创建的文本文件中获取此字符串。请帮助我，我需要这个用于我的java任务，它建立一个刽子手游戏（这些是将被猜测的词）。

Answer 1

您可以将这些值以CSV（逗号分隔的变量）存储在文件中，如下所示。

atom,electron,oxyegn,explosion,combustion,flask,laser,molecule,ion,bond

在检索时，您可以阅读文件的内容，并用逗号分隔行，如下所示

String s = ...read line form file...
String[] word = s.split(",");

此外，如果您需要保存一些新值，您可以执行以下操作（如果您使用的是Java8）

String s = Stream.of(word).collect(Collectors.joining(","));
... save s in file...

Answer 2

您可以使用StreamTokenizer：

List<String> wordList = new ArrayList<String>();
Reader reader = new StringReader("atom electron ...");//replace this with a FileReader in you case
StreamTokenizer tokenizer = new StreamTokenizer(reader);
while(tokenizer.nextToken() != StreamTokenizer.TT_EOF){
    wordList.add(tokenizer.sval);
}
reader.close();

如果你真的需要一个阵列：

String[] words = wordList.toArray(new String[worldList.size()];

Answer 3

如果您不想使用任何外部导入，则以下代码可以使用：

public class TestStrings {

    private String[] namesList;

    public TestStrings() {
        String filePath = "path/to/file";
        this.namesList = readFile(filePath).split(",");
    }

    private static String readFile(String fileName) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader(fileName));
        try {
            StringBuilder sb = new StringBuilder();
            String line = br.readLine();

            while (line != null) {
                sb.append(line);
                sb.append("\n");
                line = br.readLine();
            }
            return sb.toString();
        } finally {
            br.close();
        }
    }

Answer 4

以下是我如何解决它：

package org.gooeybits.meltdown.utilities;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * Created by Yohanan Ben Abrahams.
 */
public class Main {
    private String[] words = null;

    public Main() {}

    public Main run() {
        this.words = loadWordsFromFile("/your/path/to/file.txt");
        return this;
    }

    private String[] loadWordsFromFile(String url) {
        String currentLine;
        List<String> words = new ArrayList<>();
        BufferedReader bufferedReader = null;

        try {
            bufferedReader = new BufferedReader(new FileReader(url));

            while ((currentLine = bufferedReader.readLine()) != null) {
                String[] split = currentLine.split("\\W");
                words.addAll(Arrays.asList(split));
            }

        } catch (IOException e) {
            System.err.print("Could not open the word file: " + e.getMessage());
            e.printStackTrace();
        } finally {
            try {
                if (bufferedReader != null) {
                    bufferedReader.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return words.toArray(new String[words.size()]);
    }

    public String[] getWords() {
        return words;
    }

    public static void main(String[] args) {
        String[] words = new Main().run().getWords();
        for (String word : words) {
            System.out.println(word);
        }
    }

}

如何制作文本文件为您提供字符串数组

4 个答案: