How do I send a stream of data back to the “parent” or calling instance / object? “parent” is not the right word here, as ccc doesn’t extend bbb. Suppose your class bbb has a field data which you want to update:- class bbb{ private String data; public String getData(){ return data; } public void … Read more
The only difference in your two cases, is the parameter passed to you “println” function: In CASE1: System.out.println(” result”); Here the parameter ” result” (double quote should not be omited) is a string literal. It represents the word itself you typed between the double quote symbol and do not related with the int variable result … Read more
As you have not shown your whole program, so its hard to tell where is the error, but it might be in the default constructor of the doctor class. Anyways here is the code that you can refer. It will give the correct output. Here is the link you can refer to see the execution … Read more
You are calling public double getLatitude() from your GPS class, however the _location variable is not initialized hence you get the NullPointerException. Prior calling getLatitude() try calling the public Location getLastKnownLocation() from your GPS class. This call will initialize the _location variable. 0 solved Android Null object reference on location [duplicate]
Introduction This error occurs when the operator != (not equal to) is used with incompatible data types. The operator != is only valid for comparing two values of the same data type. In this case, the operator != is being used to compare a boolean value with an integer value, which is not allowed. To … Read more
Introduction Compile errors in Android Studio can be a frustrating experience for any Android developer. They can be caused by a variety of issues, from incorrect syntax to missing libraries. Fortunately, there are a few steps you can take to troubleshoot and solve compile errors in Android Studio. In this article, we will discuss some … Read more
Introduction If you are having trouble finding the highest and lowest values in a set of data, you have come to the right place. In this article, we will discuss how to identify the highest and lowest values in a set of data. We will also discuss some tips and tricks to help you quickly … Read more
Introduction Receiving a file type parameter from HTML/JSP into a servlet can be a tricky process. It requires knowledge of the servlet API, HTML, and JSP. This tutorial will provide a step-by-step guide on how to receive a file type parameter from HTML/JSP into a servlet. It will cover the necessary steps to ensure that … Read more
Introduction If you are looking for a way to split a string array into separate elements, then you have come to the right place. In this article, we will discuss how to split a string array into separate elements using various methods. We will discuss the different ways to split a string array, such as … Read more
It is not possible to set this. You can however create a method which copies all values of the receivedclass object to this if the types are compatible. But i don’t know if this is what you want. 3 solved Is that possible to do this = variable in Java?
Introduction When dealing with data, it is important to ensure that the data is in the correct format. One common issue that can arise is when a field value is coming in the wrong format, such as ‘[email protected]’. This can cause problems when trying to process the data, as the incorrect format can lead to … Read more
Comments by @leonardkraemer and @gabe-sechan cover most of the topic. For most of the features you pretty much just have to use desugaring and Android Studio 3+. After you set java version, like shown below, Android Studio will start suggesting Java 8 things in your code. compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } Streams are … Read more
Try using System.out.printf(“%.2f%n”, x[i]); EDIT Here’s another idea, based on your desired output: double[] x = { 1.0, 0.90, 0.80, 0.70, 0.60, 0.50, 0.40, 0.30, 0.20, 0.10, 0.00, -0.10, -0.20, -0.30, -0.40, -0.50, -0.60, -0.70, -0.80, -0.90, -1.00 }; double r = 1; for (int i = 0; i < x.length; i++) { double y … Read more
If you want to “learn Java”, you should try it with something more doable. Try implementing Conway’s Game of Life for instance. You could start by showing the results in ASCII-Art or directly show it in a JFrame (for instance by extending JLabel to draw grids from a mask). You could then improve your application … Read more
Use UTF-8 instead. It’s understood by every self-respected client side and server side operating system platform. It’s also considered the standard character encoding these days. Tomcat still defaults to the old ISO 8859-1 charset as to decoding GET request parameters and to the server platform default encoding as to decoding POST request parameters. To set … Read more