You should do it with a switch : public static void main(String args[]) { System.out.println(“Enter 1 to Add, 2 to Subtract, 3 to Divide, or 4 to Multiply”); int x = keyboard.nextInt(); switch(x){ case 1: System.out.println(“Enter an integer”); int num1 = keyboard.nextInt(); System.out.println(“Enter another integer”); int num2 = keyboard.nextInt(); System.out.println(“The sum of the numbers equals … Read more
!true is false and !false is true.It’s a negation operator. solved What is the “!” at the if statement [duplicate]
<html> <body> <script> Array.prototype.randomElement = function () { return this[Math.floor(Math.random() * this.length)] } var list1 = [ “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8”, “9”]; var list2 = [ “a”, “b”, “c”, “d”, “e”, “f”, “g”, “h”, “i”]; var list3 = [ “car”, “horse”, “gym”, “fair”, “boat”]; function myFunction() { document.getElementById(“demo”).innerHTML = list1.randomElement() + … Read more
Your if statements won’t work how you expect them to to. Let’s take an example to see why: if(board = true & board != false) This has a number of problems: You don’t need to explicitly compare to true and false. Doing so is considered bad style. if (board) is exactly equivalent to if (board … Read more
One way would be to just add a negative sign in front of the value: int myInt = -myInt; Another way to switch between a positive or negative number in a statement would be to multiply it by -1. myInt = myInt * -1; 0 solved Positive and negative number values [duplicate]
Please override the toString() method in your Search class. public String toString(){ return url + “, ” + txt; } 2 solved java ArrayList returns wrong result [closed]
We can do this in two lines of code: List<String> list = Arrays.asList(letterlist); String longest = Arrays.stream(letterlist).max(Comparator.comparingInt(String::length)).get(); Demo Inspired by this Code Review question: https://codereview.stackexchange.com/questions/75807/finding-the-longest-string-and-its-length-using-java-streams 0 solved Find the longest string
java.util.Date, like a lot of other classes in the JDK, overrides toString(), which allows you to control the string representation of your objects. You can, of course, do this for your own classes too. 1 solved How new Java.util.Date() works while other classes return just reference?
As others stated before, value of remainder is set only once. However, you check it a hundred times expecting it to tell you something else every time. I’d suggest putting it inside a loop, so you get a “fresh” value for every number. public class Even { public static void main(String args[]) { int number … Read more
Java is designed to be fully object-oriented while C is a procedural language. I suggest looking at http://www.tutorialspoint.com/cprogramming/c_overview.htm to read about C. Java is not meant to be used for procedural. This is all I can do to help. You need to do some research on the programming paradigms. Practical Explanation : Can anyone Explain … Read more
Since you don’t have a code posted, I have to guess. Instead of using this keyword, try to use MainActivity.this. If you have a subclass in your activity, you will most likely use the context of the running activity. 1 solved cant add ImageView in a subclass [closed]
Use the aggregation framework with following aggregation pipeline (Mongo shell implementation): db.ledger.aggregate([ { “$unwind”: “$Accounts” }, { “$project”: { “Total_Credits” : “$Accounts.Total_Credits”, “Total_Debits” : “$Accounts.Total_Debits”, “month_year” : { “$substr”: [ “$Accounts.Date”, 3, -1 ] } } }, { “$group”: { “_id”: “$month_year”, “Total_Credits”: { “$sum”: “$Total_Credits” }, “Total_Debits”: { “$sum”: “$Total_Debits” } } } ]) … Read more
Considering item.sku is of a String Type, you can fire your distinct query like this: BasicDBObject filter = new BasicDBObject(); filter.put( “dept”, “A” ); MongoCursor<String> c = db.getCollection(“inventory”).distinct(“item.sku”, filter, String.class).iterator(); Hope this helps. solved How to represent distinct query of mongo db in java language [closed]
Java Array use: Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 2 in array of String [duplicate] solved Java Array use: Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 2 in array of String [duplicate]
You can solve this problem in the following steps: 1- Search the internet about .DLL files for locking and unlocking your windows Desktop. 2- .DLL files are written in C or C++ language. 3- You can invoke the .DLL file if and only if the java method from where you’re invoking is declared as native(Also … Read more