How to extract numbers from a string and get an array of ints?

Question

I have a String variable (basically an English sentence with an unspecified number of numbers) and I\'d like to extract all the numbers into an array of integers. I was wond

Answer 1

Extract all real numbers using this.

public static ArrayList extractNumbersInOrder(String str){

    str+='a';
    double[] returnArray = new double[]{};

    ArrayList list = new ArrayList();
    String singleNum="";
    Boolean numStarted;
    for(char c:str.toCharArray()){

        if(isNumber(c)){
            singleNum+=c;

        } else {
            if(!singleNum.equals("")){  //number ended
                list.add(Double.valueOf(singleNum));
                System.out.println(singleNum);
                singleNum="";
            }
        }
    }

    return list;
}


public static boolean isNumber(char c){
    if(Character.isDigit(c)||c=='-'||c=='+'||c=='.'){
        return true;
    } else {
        return false;
    }
}