If you insist on shared preference use this code : To save the data private void saveSp(String key , String value){ PreferenceManager.getDefaultSharedPreferences(Context) .edit() .putString(key, value).apply(); } To get your data: PreferenceManager.getDefaultSharedPreferences(Context).getString(“string”, “default”) solved How to use shared preference to send data from activity to fragment?
You can use like this (netstat is only dummy command. you can write whatever you want) ; String command = “cmd.exe /c start ” + “netstat”; Process child = Runtime.getRuntime().exec(command); after that you can get as data stream from child process. Or you can close the cmd also with child.destroy() method forexample. 1 solved How … Read more
Use replace() of String example to demonstrate using String.replace(), and this does not cover your entire Story! public class Test { public static void main(String[] args) { String story = “Hello, I am strHost and I will be accompanied today by strHost1 and strHost2. As we walk through the mansion today, feel free to ask … Read more
Yes, it is possible, however, this has nothing to do with programming and is more of a mathematical question. (I would recommend going here https://math.stackexchange.com/) Solving this using basic Algebra, given the slope and y-intercept we can check if a point is on a line by substituting the x and y values. For example, if … Read more
I don’t know how you designed your models but you can follow this way: class Person { String name; Integer age; List<Address> addressList; // getter, setter, const… } class Address { // some fields… // getter, setter, const… } And then you can add your address to your person via add method: Person p = … Read more
You could split over a specific string (degree character for example), store in a String array and parse the first element. Something like this: String str = “47°C” String[] strArray = str.split(“°”); int number = Integer.parseInt(strArray[0]); solved I have a string with a number and a letter, is there a way to move the integer … Read more
GPA = Double.parseDouble(df.format (((double)qualityPoints) /(double)(sumOfHours))); int qualityPoints = 0; int sumOfHours = 0; double GPA = 0; DecimalFormat df = new DecimalFormat(“0.00”); GPA = Double.parseDouble(df.format (((double)qualityPoints) /(double)(sumOfHours))); No compilation error for this. 8 solved Converting String to Double in Java [closed]
Well, you forgot to convert to radians : public double distance(double x, double y, double x2, double y2) { // r is earth’s radius (mean radius = 6,371km) double r = 6371e3; double toMile = 0.000621371; double latDiff = (x2 – x)*(Math.PI)/180; double lonDiff = (y2 – y)*(Math.PI)/180;; // a is the square of half … Read more
Your content contains no ” quotes, and no text gm, so why would you expect that regex to match? FYI: Syntaxes like “foo”gm or /foo/gm are something other languages do for regex literals. Java doesn’t do that. The g flag is implied by the fact that you’re using a find() loop, and m is the … Read more
What you have in your json is a List<Cast>, and the Cast class is a simple String so what you could do is get the list of Cast and then get the list[index].name to get the String In case you’d like a List<String> you should have this as json [ “Jhon”, “Anne”, “Carl” ] Then … Read more
Possible solution In order to solve your problem, use string.startsWith() instead of string.contains(): if (order.startsWith(pizzaSize[0])) { /* medium */ } else if (order.startsWith(pizzaSize[1])) { /* large */ } else { /* unexpected input */ } This works because the first letter always indicates the pizza size. You can stick to using contains() for the toppings. … Read more
public static int addZeros(int valueToAddZeros, int valueToCompare){ while(String.valueOf(valueToCompare).length() > String.valueOf(valueToAddZeros).length()){ valueToAddZeros = valueToAddZeros * 10; } return valueToAddZeros; } 1 solved java – How to add zeros to an int until this int lenght equals the int2 lenght? [duplicate]
Use this: public static void showToast(Context context, String text) { Toast.makeText(context, text, Toast.LENGTH_LONG).show(); } now for calling this method you should call like this: ClassName.showToast(context,”text”); Here classname is class that containing static method. 0 solved Create Toast by a static method
Duplicate file error comes when you have added the dependency jar to build.gradle file and also you are having same .jar file in your libs folder. To eliminate this error try to have only one thing, either have it in your build.gradle or in locally in your libs folder. 0 solved I am trying to … Read more
Recursive java program doesn’t return any value. Putting a print statement right before the return statements prints infinite values solved Recursive java program doesn’t return any value. Putting a print statement right before the return statements prints infinite values