解开继承的方法 [英] Untangling Inherited Methods

问题描述

好吧，这是我第一次实现类，一切都错了。我正在实现一个不同的类，PhraseGenerator，和继承的方法，我想在这里定义是getPhrase（）。它需要返回archa。而不是在它内部工作，我选择了围绕我的工作围绕在我的工作，然后，现在，无论我放在哪里，一个不同的错误出现。在处理任何这些之前，我想确保我把它放在正确的地方。对我的理解，它会在公共.... FromFile实现PhraseGenerator。关于应该去哪里的任何想法？

  import java.io.BufferedReader; 
 import java.io.FileReader; 
 import java.util.List; 
 import java.util.StringTokenizer; 
 import java.util.regex.Matcher; 
 import java.util.regex.Pattern; 
 
 
 public class PhraseGeneratorFromFile implements PhraseGenerator {
 private ParserHelperImpl parserHelper; 
 public String getPhrase（）{
 
 
 public PhraseGeneratorFromFile（String filename）{
 //读取文件
 StringBuilder fileContent = new StringBuilder 
 BufferedReader br = new BufferedReader（new FileReader（filename））; 
 try {
 
 String line = br.readLine（）; 
 
 while（line！= null）{
 fileContent.append（line）; 
 fileContent.append（'\\\
'）; 
 line = br.readLine（）; 
} 
 String everything = fileContent.toString（）; 
} finally {
 br.close（）; 
} 
 
 
 parserHelper = new ParserHelperImpl（）; 
 
 
 List< String> phraseCollection = parserHelper.getPhrases（fileContent，phrases：）; 
 String archetype = parserHelper.getRandomElement（phraseCollection）; 
 boolean flagga = true; 
 while（flagga = true）{
 Pattern ptrn = Pattern.compile（＃[^＃] +＃）; 
 Matcher m = ptrn.matcher（archetype）; 
 String fromMatcher = m.group（0）; 
 String col =：; 
 String token = fromMatcher + col; 
 List< String> pCol = parserHelper.getPhrases（fileContent，token）; 
 String repl = parserHelper.getRandomElement（pCol）; 
 String hash =＃; 
 String tk2 = hash + token + hash; 
 archetype = parserHelper.replace（archetype，tk2，repl）; 
 flagga = m.find（）; 
} 
 String theArcha = archetype; 
 
 
 return theArcha; 
} 
 
 
} 
} 
  

 接口PhraseGenerator {
 String getPhrase（）;然后，你写的实现类将采用
 $ b的形式。
} 
  

$ b <
$ b

  class PhraseGeneratorImpl implements PhraseGenerator {
 
 private ParserHelperImpl parserHelper; 
 
 
 @Override //用于覆盖或实现的方法
 public String getPhrase（）{
 //将所有要实现的代码放在这里.. 
 
 //如果你想使用辅助类，干净的方法是使用它的一个实例（你用Helper试过）
 //如果你想使用
 //从文件系统读取一些东西在这个方法下面定义一个私有方法
 String filePhrase = phraseGeneratorFromFile（）; 
 //现在使用filePhrase做其他事情
 
} 
 
 // 
 private String phraseGeneratorFromFile（）{
 // Do所有的东西和返回短语/字符串所以声明返回类型。你没有在上面的代码中做它
} 
 
 
 
} 
  

Okay, so this is my first time implementing classes, and everything's going wrong. I'm implimenting a different class, PhraseGenerator, and the method inherited which I wish to define here is getPhrase(). It needs to return theArcha. Instead of working within it, I chose to wrap its braces around my work afterwards, and now, no matter where I put it, a different error arises. Before dealing with any of these, I want to make sure I'm putting it in the right place. To my understanding, it would go within public....FromFile implements PhraseGenerator. Any thoughts on where it should go?

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.List;
import java.util.StringTokenizer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


public class PhraseGeneratorFromFile implements PhraseGenerator {
    private ParserHelperImpl parserHelper;
    public String getPhrase() {


    public PhraseGeneratorFromFile(String filename) {
        // read file
        StringBuilder fileContent = new StringBuilder();
        BufferedReader br = new BufferedReader(new FileReader(filename));
        try {

            String line = br.readLine();

                while (line != null) {
                fileContent.append(line);
                fileContent.append('\n');
                line = br.readLine();
            }
            String everything = fileContent.toString();
        } finally {
            br.close();
        }


        parserHelper = new ParserHelperImpl();


        List<String> phraseCollection = parserHelper.getPhrases(fileContent,"phrases:");
        String archetype = parserHelper.getRandomElement(phraseCollection);
        boolean flagga = true;
        while(flagga = true){
        Pattern ptrn = Pattern.compile("#[^#]+#");
        Matcher m = ptrn.matcher(archetype);
        String fromMatcher = m.group(0);
        String col = ":";
        String token = fromMatcher+col;
        List<String> pCol = parserHelper.getPhrases(fileContent, token);
        String repl = parserHelper.getRandomElement(pCol);
        String hash = "#";
        String tk2 = hash + token + hash;
        archetype = parserHelper.replace(archetype, tk2, repl);
        flagga = m.find();
        }
        String theArcha = archetype;


            return theArcha;
    }


    }
    }

解决方案

Your interface is probably like this

interface PhraseGenerator {
String getPhrase(); 
}

Then the implementing class you wrote will take the form

class PhraseGeneratorImpl implements PhraseGenerator  {

private ParserHelperImpl parserHelper;


@Override //Used for an overridden or implemented method
public String getPhrase() {
//Put all the code you want to implement here..

//If you want to make use of a helper Class the clean way is to use an instance of it(You tried it with Helper)    
//If you want to make use of a utility method within the same class, 
//say reading something from the file system define a private method below this method
String filePhrase = phraseGeneratorFromFile();
//Now use the filePhrase do do other stuff

}

//
private String phraseGeneratorFromFile(){
//Do all the stuff and return phrase/string so declare return type. you havent done it in the code above
}



}

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