I think when you run your program then edit text have no value that means it will return NULL and NULL can’t be a Integer value so you must have to check Condition Like String editTextValue = number.getText().toString(); if(!TextUtils.isEmpty(editTextValue)){ angka = Integer.parseInt(editTextValue); } I hope its work for you. 3 solved Getting a value of … Read more
Try this. public static void main(String[] args) { Robot robot = null; try { robot = new Robot(); } catch (AWTException e) { e.printStackTrace(); } catch (Throwable th) { th.printStackTrace(); } } The problem is almost certainly that some exception other than AWTException is being thrown. (My money, since you’re a self-described noob, is on … Read more
The pre order goes like this: Visit the current node If exists left node, visit pre order of left node. If exist right node, visit pre order of right node. I’m sure that with these few steps you will be able to implement your pre order method. A pseudocode of this: function preOrder(Node node) //1. … Read more
Not sure it will help but you can try changing some of the Graphics properties. For example: g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); 0 solved Low Quality Rendering Rotating Images
Well, since you want to use String numbers, you will have to wrap them in quotations, but your sorting can be much more readable. I would suggest the following String[] numbers ={“-100”, “50”, “0”, “56.6”, “90”, “0.12”, “.12”, “02.34”, “000.000”}; List<BigDecimal> decimalList = new ArrayList<>(); for(String s: numbers){ decimalList.add(new BigDecimal(s)); } Collections.sort(decimalList); Collections.reverse(decimalList); // edit … Read more
Instead of using read(), you should initialize a scanner and use that. This is what it would look like: package grading.on.a.loop.java; import java.util.Scanner; public class GradingOnALoopJava { public static void main(String[] args) { Scanner in = new Scanner(System.in); String[] grades = new String[5]; for(int counter = 0; counter < 5; counter++) { System.out.println(counter * 5 … Read more
For the first, it depends on the operating system, which you have not specified. If it’s on Windows, there is a pair of Windows commands: assoc and ftype. Each type of file is given a “type name.” assoc associates an extension with a type, and ftype associates a type with a command to execute. For … Read more
Yes, you can use Apache Kafka to communicate between Microservices. With Spring boot you can Spring Kafka or plain kafka-client API. Well there are various ways to achieve this, and it is totally depends on your use case. You can start with Producer & Consumer API, producer will send records to a topic, and then … Read more
Does Java 8 specification allow to use interface reference type variable on objects that don’t use the implements keyword explicitly? [closed] solved Does Java 8 specification allow to use interface reference type variable on objects that don’t use the implements keyword explicitly? [closed]
The method findViewById returns an instance of the class that is actually used to define that view in your XML file. (Seekbar) is used to cast that view with specific view. You have to cast that(findViewById) to the class that your variable is defined when you use it. So, This is the reason for SeekBar … Read more
It depends upon which implementation of stack you are using(Array, LinkedList). Use can use either top=-1 or top=0 to represent empty stack, no as such hard rule. If you are using an Array based stack(e.g A[n]) then better to use top=-1 as array indexes starts from 0 to n-1 for an array of size n … Read more
Output in red is what is written to System.err somewhere in the program (as opposed to System.out. In the default configuration they both end up in the same place, hence the different coloring). This is not necessary a bad thing, depending on what it indicates. The only way to get rid of it is to … Read more
public void generateHashkey(){ try { PackageInfo info = getPackageManager().getPackageInfo(PACKAGE, PackageManager.GET_SIGNATURES); for (Signature signature : info.signatures) { MessageDigest md = MessageDigest.getInstance(“SHA”); md.update(signature.toByteArray()); String s = Base64.encodeToString(md.digest(), Base64.NO_WRAP); Log.e(“HASH KEY “, s); } } catch (PackageManager.NameNotFoundException e) { Log.d(“Name not found”, e.getMessage(), e); } catch (NoSuchAlgorithmException e) { Log.d(“Error”, e.getMessage(), e); } } try to generate the … Read more
All you have to do is add escape characters for \ and “, like this… \\ and \”. “Size: 0-0 — 9 otto @ z . t. — fig se REYfAR, S l ‘ WELCOME BACK, ELLEN TEST! ..$FREE $l PICK YOUR \” \” . @lotto POWER ‘ ’-; A . . . . – … Read more
Change adapter = new DataAdapter(data,context); line to adapter = new DataAdapter(data,YourActivity.this); then, go to the Adapter class, and paste public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> { private ArrayList<dashboard.Dashboard_info> android; private Activity activity; public DataAdapter(ArrayList<dashboard.Dashboard_info> android,Activity activity) { this.android = android; this.activity = activity; } now use picasso with Picasso.with(activity).load(android.get(i) .getWeek_image()) .resize(250,200) .into(viewHolder.img_android); solved Picasso recycle view … Read more