java查找浮点数字

private Pattern pattern;
private String content = "Receive from xxx payment:0.8$";
//        pattern = Pattern.compile("\\d+(\\.\\d+)?");//or
        pattern = Pattern.compile("[0-9]+(\\.[0-9]+)?");

	String value;
	 while (m.find()) {
            value = m.group();
            Jlog.e(tag, "Find=" + value);// >>0.8
           Jlog.w(tag, "float=" + Float.parseFloat(value));//
        }