Reading only the integers from a txt file and adding the value up for each found

Question

I am trying to read a txt file that contains strings with integers. I would like to be able to get just the integers from this file and add the value each to create a total.

Answer 1

your code doesn't really do what your comments claim it does maybe you want this?

    import java.util.regex.Pattern;

    public void goalCount(){
                int goals=0;// i dont see where this is used
                double total=0;
             try{
                Scanner scan = new Scanner(new File("validtest.txt.txt"));
                while (scan.hasNext()) {
                    String temp=scan.next();
                     if (isInteger(temp)) {
                         total+=Integer.ParseInt(temp);
                        System.out.println("Found :" + temp);
                     }
                     else{
                    System.out.println("Not Found :" + temp);}
                  }
                  scan.close();
               }
            catch(Exception e){

            }
               System.out.println("Total Goals:"+total); 
            }

    }
    public boolean isInteger( String input ) {
        Pattern p=Pattern.compile("-?\\d+");
        return input.matches(p.pattern());}
    }
    }