Introduction to Java Programming10th Edition课后练习答案

由 Luiz Arantes Sa编写，并不是随书配套的答案，可以作为参考

package AppUtils;


import java.io.*;
import java.util.PriorityQueue;
import java.util.Queue;

/**
 * Created by Luiz Arantes Sa on 1/29/15.
 */
public class JavaStringRemover {

    public static void main（String[] args） {

        Queue queue = new PriorityQueue<>（1000）;
        queue.add（new File（“/Users/Kernel/Desktop/intro-to-java-10th-edition/src“））;

        int count = 0;
        while （!queue.isEmpty（）） {
            File file = queue.poll（）;
            if （file.isDirectory（）） {
                File[] listFiles = file.listFiles（）;
                for （File listFile : listFiles） {
                    queue.add（listFile）;
                }
            } else {
                if （!file.getName（）.matches（“.*.java“））
                    continue;
                try （BufferedReader in = new BufferedReader（new FileReader（file））） {
                    StringBuilder sb = new StringBuilder（100000）;
                    char[] chars;

                    while （（in.read（chars = new char[（int）file.length（）]）） != -1）
                        sb.append（chars）;


                    in.close（）;
                    System.out.println（file.getName（））;
                    String s = filterString（sb.toString（））;
                    try （BufferedWriter out = new BufferedWriter（new FileWriter（file false））） {
                        out.write（s.toCharArray（））;
                    }
                    count++;
                } catch （IOException e） {
                    e.printStackTrace（）;
                }

            }

        }
    }

    public static String filterString（String string） {
        StringBuilder sb = new StringBuilder（string）;
        int startIndex = 0;
        while （（startIndex = resetToNextState（sb startIndex）） != -1） {
            if （states[IN_BLOCK]）
                startIndex = removeBlockComment（sb startIndex）;
            else if （states[IN_LINE]）
                startIndex = removeInlineComment（sb startIndex）;
            else if （states[IN_STRING]）
                startIndex = removeStringLiteral（sb startIndex）;
            else if （states[IN_CHAR]）
                startIndex = removeCharLiteral（sb startIndex）;
        }

        return sb.toString（）;
    }

    private static int removeCharLiteral（StringBuilder sb int startIndex） {
        return removeString（sb  startIndex tokens[IN_CHAR] “\\“ EXCLUSIVE）;
    }

    private static int removeStringLiteral（StringBuilder sb int startIndex） {
        return removeString（sb startIndex  tokens[IN_STRING] “\\“ EXCLUSIVE）;
    }

    private static int removeInlineComment（StringBuilder sb int startIndex） {
        return removeString（sb startIndex tokens[IN_LINE] ““ KEEP_END）;
    }

    private static int removeBlockComment（StringBuilder sb int startIndex） {
        return removeString（sb  startIndex tokens[IN_BLOCK] ““ INCLUSIVE）;
    }


    private static final int INCLUSIVE = 0;
    private static final int EXCLUSIVE = 1;
    private static fin

 属性            大小     日期    时间   名称
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     目录           0  2015-11-09 15:40  intro-to-java-10th-edition-master\
     文件         110  2015-11-09 15:40  intro-to-java-10th-edition-master\.gitignore
     文件         339  2015-11-09 15:40  intro-to-java-10th-edition-master\README.md
     目录           0  2015-11-09 15:40  intro-to-java-10th-edition-master\src\
     目录           0  2015-11-09 15:40  intro-to-java-10th-edition-master\src\AppUtils\
     文件        6057  2015-11-09 15:40  intro-to-java-10th-edition-master\src\AppUtils\JavaStringRemover.java
     目录           0  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\
     文件         480  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_01.java
     文件         370  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_02.java
     文件         614  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_03.java
     文件         526  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_04.java
     文件         369  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_05.java
     文件         439  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_06.java
     文件         437  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_07.java
     文件         568  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_08.java
     文件         524  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_09.java
     文件         634  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_10.java
     文件        1222  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_11.java
     文件        1176  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_12.java
     文件         839  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_01\Exercise_13.java
     目录           0  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\
     文件         758  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exercise_01.java
     文件         781  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exercise_02.java
     文件         628  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exercise_03.java
     文件         737  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exercise_04.java
     文件         879  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exersice_05.java
     文件         956  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exersice_06.java
     文件         872  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exersice_07.java
     文件        1515  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exersice_08.java
     文件         579  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exersice_09.java
     文件         777  2015-11-09 15:40  intro-to-java-10th-edition-master\src\Chapter_02\Exersice_10.java
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