What is setBounds and how do I use it?
I cannot find anything on setBounds, what it is for, or what its function actually is. Could someone clear me up on this? Thanks so much!
java
Always Round UP a Double
You can use Math.ceil() method. See JavaDoc link: https://docs.oracle.com/javase/10/docs/api/java/lang/Math.html#ceil(double) From the docs: ceil Returns the smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer. Special cases: If the argument value is already equal to a mathematical integer, then the result is the same as … Read more
What Java ORM do you prefer, and why?
It’s a pretty open ended question. I’ll be starting out a new project and am looking at different ORMs to integrate with database access. Do you have any favorites? Are there any you would advise staying clear of?
Unsigned long in Java
Currently, I am using signed values, -2^63 to 2^63-1. Now I need the same range (2 * 2^64), but with positive values only. I found the java documentations mentioning unsigned long, which suits this use. I tried to declare 2^64 to a Long wrapper object, but it still loses the data, in other words, it … Read more
What is the difference between response.sendRedirect() and request.getRequestDispatcher().forward(request,response)
To simply explain the difference, doesn’t prepend the contextpath (refers to the application/module in which the servlet is bundled) but, whereas will prepend the contextpath of the respective application Furthermore, Redirect request is used to redirect to resources to different servers or domains. This transfer of control task is delegated to the browser by the container. That … Read more
java uses or overrides a deprecated API error
Those are not errors, they are warning, your code compiled. To explain these lines : Note: MyClass.java uses or overrides a deprecated API. You are doing a call of DataInputStream#readLine which is deprecated since JDK 1.1 as per the documentation : Deprecated.This method does not properly convert bytes to characters. As of JDK 1.1, the preferred way … Read more
How can I create an Array of ArrayLists?
As per Oracle Documentation: “You cannot create arrays of parameterized types” Instead, you could do: As suggested by Tom Hawting – tackline, it is even better to do:
Using ADB to capture the screen
I’m trying to get a screenshot of the phone screen as fast as possible. Currently, I am doing: However it is too slow and takes up to 3 seconds. Is there any better way to do this? I intend to use this function with an unrooted phone. Also what are the different arguments I can … Read more
unused import statement for used ones in IntelliJ IDEA
I will assume that you want to use those imports in your code. The warnings, in gray, are suggesting you to remove imports of libraries that you are then NOT using in your code (in order to save resources and gain other advantages). The errors, in red, are related to the lack of availability of … Read more
Convert String array to ArrayList
Use this code for that,