错误，在switch语句中表示单引号

| 我必须删除文件中的所有注释。引号中的注释定界符应视为文本，并且必须打印到屏幕上。注释内的引号被视为其他注释，必须将其删除。当涉及单引号时，以下switch语句存在问题，这给了我一个错误。我知道错误是什么，但我不知道如何解决。

import java.io.*;

public class Q3{

public static final int STATE_NORMAL = 0;
public static final int STATE_QUOTE_SINGLE = 1;    // this:\'\' 
public static final int STATE_QUOTE_DOUBLE = 5;    // this: \"\" 
public static final int STATE_SLASH = 2;            // this: /
public static final int STATE_SLASH_STAR = 3;     // this: /*    *
public static final int STATE_COMMENT = 4;          // this: /*     */  || /* only

public static void main(String[] argv) throws IOException{
    final int EOF = -1;
    InputStreamReader in = new InputStreamReader(System.in);
    int c;
    char[] buffer = new char[2];
    int currState = Q3.STATE_NORMAL;
    char outChar;        
    while((c = in.read()) != EOF){

        outChar = (char) c;
        switch (outChar){

            case \'/\' :   
             /*   if(currState == Q3.STATE_QUOTES)
                     currState ==Q3.STATE_QUOTES;         */
                if(currState == Q3.STATE_NORMAL)
                    currState = Q3.STATE_SLASH;
                else if(currState == Q3.STATE_COMMENT)
                    currState = Q3.STATE_NORMAL;


                break;

            case \'*\':
               if(currState == Q3.STATE_SLASH)
                    currState = Q3.STATE_COMMENT;

                break;

            case \'\"\':
                if(currState == Q3.STATE_NORMAL)
                    currState = Q3.STATE_QUOTE_DOUBLE;
                if(currState == Q3.STATE_QUOTE_DOUBLE)
                    currState = Q3.STATE_NORMAL;

                break;

            *case \'\'\':
                if(currState == Q3.STATE_NORMAL)
                    currState = Q3.STATE_QUOTE_SINGLE;
                if(currState == Q3.STATE_QUOTE_SINGLE)
                    currState = Q3.STATE_NORMAL;

                break;*


        }      
        if(currState != Q3.STATE_COMMENT)            
            System.out.print(outChar);
        }
    }
  }