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Map<String, List<String>> newMap = new HashMap<>(); for (Map.Entry<String, String> entry : masterList.entrySet()) { List<String> values = new LinkedList<>(); if (entry.getKey().startsWith(“tag_”)) { String[] words = entry.getValue().split(“,\\s*”); Collections.addAll(values, words); } else { values.add(entry.getValue()); } newMap.put(entry.getKey(), values); } One should not change the type of the map, so need to create a new map. solved How to create … Read more

public class Dummy { public static void main(String[] args) { double min = 0.0; double max = 3.0; double d = 0.5; for (double n = min; n <= max; n+=d) { double result = (Math.pow(n*(n/1), 2)) / 4; // {N(N/1)^2}/4 System.out.print(result + “, “); } } } The output: result : 0.0, 0.015625, 0.25, … Read more

The constructor public HeartRates( String fName, String lName, int aMonth, int aDay, int aYear) of class HeartRates has the arguments String,String,int,int,int. So you have to provide those values in HeartRates profile = new HeartRates(); // need values as argument Some thing like:- // calling constructor with arguments HeartRates profile = new HeartRates(firstName, lastName, month, day, … Read more

Your problem description is unclear, but given your input file, the following probably does what you need: HashMap<String, HashMap<String, String>> repoUserMap = new HashMap<>(); for (int i = 0; i < data.size(); i++) { //data is an arraylist String[] seq = data.get(i).split(“,”); String repo = seq[0]; // Lookup the 2nd-level map, and create it if … Read more

Looks like you’re trying to do something like this: static String HTMLchange(String src) { return src.replaceAll(“ber”, “vai”); } which replaces every occurrence of “ber” in the string with “vai” UPDATE using in.next() fetches the next token. Whitespace is considered as a legit delimiter so when the user enters the string “x ber x” the first … Read more

You can do with a count variable, e.g.: public static void main(String[] args) throws Exception{ int i; int count = 1; for (i=1;i<=100;i++) { System.out.print(i); if(count % 5 == 0) { System.out.print(“*”); }else if(count % 8 == 0) { System.out.print(“*”); count = 0; } count++; } } 3 solved Print asterisk after some integer [closed]