Ok, I think converting string into Integer and then typecasting it to double is causing the error. Why don’t you just convert the string to double. Also you must trim the line while reading it to avoid any spaces. String holderStr = br.readLine().trim(); System.out.println(holderStr); totalBalNum = Double.parseDouble(holderStr); 2 solved NumberFormatException error from reading a file
You need to add parenthesis of the for-loop and then add break statement inside if-statement. for (int divisor = 2; divisor <= sum / 2; divisor++){ if (sum % divisor == 0) { // If true, number is not prime isPrime = false; // Set isPrime to false System.out.println(“The sum is not a prime number.”); … Read more
You compare an Integer with a String. That obviously can not work. Convert either Guess into int or i into String. solved I am doing a coin toss game program. But i am having an error in this portion [ (if Guess==i) {. How do I solve this? [duplicate]
In the java class Bean2 you have to organize your imports, the Bean1 should be imported though. Besides you have to do configure your components scan due to autowiring and component scanning. Either you use Java or XML configuration. You can check some examples here: https://www.mkyong.com/spring/spring-auto-scanning-components/ you can find the official Spring reference here: https://docs.spring.io/spring/docs/5.0.0.RELEASE/spring-framework-reference/core.html#spring-core … Read more
Char is given. Array is given. If char is ‘A’ print max. If it is “B” print min. Otherwise print mean value of max and min elements solved Char is given. Array is given. If char is ‘A’ print max. If it is “B” print min. Otherwise print mean value of max and min elements
Your question is really vague. Rather than coming here asking a vague question you should provide some code snippets, explain what your have tried and what is going wrong. This will help people answer your question, and not down-vote your question to hell (like what is happening now). With that being said i’ll take a … Read more
What have you tried? Here’s one possible solution: class ForDemo { public static void main(String[] args){ for(int i=1; i<11; i++){ if(i != 5){ System.out.println(“Count is: ” + i); } } } } I added a check in there: if(i != 5) which executes the code inside only if the condition is true (ie: i is … Read more
In Java there are lots of ways you can code to get the contents between brackets (or any two specific characters for that matter) but you sort of want to dabble with a regular expression which can be rather slow for this sort of thing especially when dealing with multiple instances of bracket pairs within … Read more
Yes, you can use server-side Java code as a mediator. Use JavaScript to POST data to an HttpServlet, via JavaScript’s XMLHttpRequest object. Then handle the data in your servlet. Once you’ve done your DB business, you can send a “All done!” response back, to be handled by your JS. I suggest reading up on the … Read more
You could try converting double nN to a string and see if your String line contains it with if statement: if (line.contains(Double.toString(nN))) { code… } solved Check if certain numbers are in a string
You are obviously not showing all the pertinent code or you simply have neglected to place the needed code into your method that should make this work. A ResultSet is basically a collection of results from your query which you need to iterate through to access all results from that query. A while loop is … Read more
No, that is not possible without authorization. You either have to authenticate yourself or let the user perform the authentication at client side and use Google’s user API with the token. Imagine Google giving your personal details to anyone just because he/she knows your email id, why’d they ever do that? 7 solved How to … Read more
You’ve two arrayList one local and another one global. onClick() method you’re adding your item in global arrayList having reference name fruits but your ListView using local arrayList also having same name fruits, so don’t create local list inside onCreate() method. Also after adding new fruit call notifyDataSetChanged() on your adapter. ArrayList<String> fruits; ListAdapter myAdapter; … Read more
How about you try this public List<Registration> getList(SearchReport sc) List<Registration> crReg = new ArrayList<Registration>(); String selectQuery = “SELECT * FROM ” + TABLE_REGISTRATION + ” WHERE ” + DATE_COLUMN + ” BETWEEN ” + sc.getFrom() + ” AND ” + sc.getUntil() + ” AND ” + sc.getName(); SQLiteDatabase db = this.getReadableDatabase(); Then List<Registration> src = … Read more
You can compare like below Code: List<String> global = new ArrayList<String>; Map<String, ArrayList<String>> newMap = new HashMap<String, ArrayList<String>>(); Map<String, ArrayList<String>> map = new HashMap<String, ArrayList<String>>(); for (String key:map.keySet()) { List<String> arrayList= map.get(key); for (String words:arrayList) { List<String> newList = new ArrayList<String>; for (String globallist:global) { if(words.equals(globallist)){ newList.add(words); } } newMap.put(key,newList); } } 1 solved compare … Read more