java - 如何返回对字符串的更改

Question

如何调整 Changer 类中的更改方法，以便它将执行所有添加的更改并返回包含更改的字符串？我在尝试在 for 循环中实现此操作时遇到问题。输出的字母上不应有任何重音符号。

public class Change {
    private char fromCharacter;
    private char toCharacter;

    public Change(char fromCharacter, char toCharacter) {
        this.fromCharacter = fromCharacter;
        this.toCharacter = toCharacter;
    }

    public String change(String characterString) {
        String newWord = characterString.replace(fromCharacter, toCharacter);
        return newWord;
    }
}

import java.util.ArrayList;

public class Changer {
    private ArrayList<Change> changes;

    public Changer() {
        this.changes = new ArrayList<Change>();
    }

    public void addChange(Change change) {
        this.changes.add(change);
    }

    public String change(String characterString) {
        String word = "";

        for (Change change : changes) {
            word = change.change(characterString);
        }   

        return word;
    }
}

public class Main {
    public static void main(String[] args) {
        Changer scandiesAway = new Changer();
        scandiesAway.addChange(new Change('ä', 'a'));
        scandiesAway.addChange(new Change('ö', 'o'));
        System.out.println(scandiesAway.change("ääliö älä lyö, ööliä läikkyy"));

    }
}

Answer 1

按如下方式更改您的方法；

类更改

public String change(String characterString)  {       
  return characterString.replace(fromCharacter, toCharacter);  
}

类转换器

public String change(String characterString) {

    for (Change change : changes) {
        characterString = change.change(characterString);
    }

    return characterString;
}