trying to read from a file and split it into words and store those words in an arrayList

Question

in my code when i want to print out the list , there is return of line and i don't know how to get rid of it, for example if my file contain those lines:
i can't think of anything to write
blah blah blah
when i print out my list i got this:
{i, can't, think, of, anything, to, write
blah,blah , blah}

this is my code:

    public static void main(String[] args) {

    ArrayList<String> list = new ArrayList<>() ;   
    try(BufferedReader br = new BufferedReader(new FileReader("test.txt"));){

        int i = 0;

        String str = " ";
        while((i = br.read()) != -1){

            str += (char) i;

            if( (char) i == ' '){

               list.add(str.toString());
               str = " " ;
           }

        }
        list.add(str.toString());

       }catch (Exception e){
           System.out.println("there is an exception ");
       }
    printArrayList(list);
}

public static void printArrayList(ArrayList<String> list){
    System.out.print("{");
    for(int i = 0; i<list.size(); i++){

        if (i > 0)
        System.out.print("," + list.get(i));
        else 
            System.out.print(list.get(i));
    }
    System.out.print("}");


}

Answer 1

Are you opposed to importing a library? Apache StringUtils has a method that splits on whitespace, returning everything else in tokens.

https://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/StringUtils.html#split%28java.lang.String%29

Answer 2

This is happening because you are only splitting the sentence when you find a space if( (char) i == ' ') . If you want to split it on new lines also, use

if ( (char) i == ' ' || (char) i == '\\n')

Note: \\n is not the line separating character in all the platforms. AFAIK, it can be anyone of \\n or \\r or \\r\\n ..