The code that checks bouncing is off by a bit. First of all, ball.getCenterX()+ball.getRadius() is effectively the right side of the ball, and that’s the only part that you’re comparing to the paddle’s location. That means that the effective paddle location is off by an amount equal to the radius of the ball. You can … Read more
Getting value from the request, you should be putting a value to a request. This code request.getAttribute(“testvalue”); is getting a value, but that code request.setAttribute(“testvalue”, value); is putting it. This is because you want to avoid using the HTTP session. solved Send value from 1 jsp to another jsp
You should be able to perform all the steps weston mentioned in his answer, otherwise, I’m afraid me just giving you the code won’t teach you very much. Instead, I will provide you the pieces mentioned in the other answer. You want a class that represents the course, with name and points fields This is … Read more
There are several concrete classes that implement the List interface in the java.util package. Looking at List‘s javadoc lists a few of them under the “All Known Implementing Classes” heading. You’ll find the implementations there. solved Where can we find the definition of methods present in the interfaces given by java.util package
You are missing the map operator here. You have to add map operator to the stream processing pipeline before collecting it. Here’s how it looks. objList.stream().map(Obj::val).collect(Collectors.joining(“.”)); solved Concat parameters from object list
System.out.print(Arrays.deepToString());//neither of them seems to be working System.out.print([0].Stringform()); This is dead code. It does nothing. In the first line you are asking the class Arrays to do something?? I’m not sure what you want to do there. Also change the name of the Number() function it might have conflicts with Java. Also brackets and semicolons … Read more
look at this code: you must load image bytes from cursor and convert it to Bitmap. byte[] imageBytes = getBlob(cursor, “ImageFieldName”, null); if (imageBytes != null) { Bitmap bmp= convertByteArrayToBitmap(imageBytes); imageview1.setImageBitmap(bmp); } private byte[] getBlob(Cursor cursor, String colName, byte[] defaultValue) { try { int colIndex; if (cursor != null && (colIndex = cursor.getColumnIndex(colName)) > -1 … Read more
It moves (or tries to, returning a boolean telling whether it succeeded or not) the resultset cursor forward. The count variable is useless, since you can just write if(rs.next()) to determine which message is shown. 6 solved why we use next() method in java? [duplicate]
You want that $ in either case. Instead of ‘slash OR end’, it’s more ‘optional slash and then a very much not-optional end’. So.. /?$. You don’t need to normally escape slashes, especially in java regexes: Pattern.compile(“[-/](\\d+)/?$”) This reads: From minus or slash, a bunch of digits, then 0 or 1 slashes, then the end. … Read more
You have to remove the seconds in your pattern: new SimpleDateFormat(“‘Statistics since’ MM/dd/yyyy hh:mm a”); 1 solved how to parse Date formate? [duplicate]
java.lang.SecurityException: Permission denied (missing INTERNET permission?) You need the INTERNET permission declared in your manifest: <uses-permission android:name=”android.permission.INTERNET” /> 1 solved Android – Json Parsing – App Crashes [closed]
Replace below line in your code, ParseObject testObject = new ParseObject(“TestObject”); with, ParseObject testObject = ParseObject.create(“TestObject”); and it will be solved. Reference 1 solved Unfortunately app stopped working [duplicate]
Welcome to stackoverflow. It seems like you’re not using any loop inside your main method, so your program simply closes after it executed the last statement. You want to add something like: while (!”q”.equals(userChar) && !”Q”.equals(userChar)) { System.out.println(“Choose R for Rock, P for Paper, S for Scissors, or Q to Quit, and press Enter: “); … Read more
Based on provided results, you need updated first loop and second. Fist loop should start from 9 as you already printed mid line in previous part. And second loop should iterate to counter of fist loop to achieve what you except: public static void main(String[] args) { for (int i = 10; i >= 1; … Read more
There’s a typo, use keySet() instead of KeySet() for (String book : library.keySet()) { } 0 solved What’s wrong with my Java code about HashMap? [closed]