Problem is you are setting wrong layout in your UserLogin Activity. You are setting activity_main.xml instead you need to set your UserLogin Activity layout XML file . You are doing like this setContentView(R.layout.activity_main); Instead you need to do like setContentView(R.layout.YOUR_USER_LOGIN_ACTIVITY_LAYOUT); 8 solved Intent throwing error in click listener in Android Studio
Check out the Quick Guide on using Apache POI‘s Excel Component API. It sounds like you want to open a file, set some cell values, and write back to a file. See the section “Files vs InputStreams” for how to open a file and “Creating Cells” for how to set values for cells and write … Read more
Simply put asterisk < myArray[counter] Means that it’s checking whether amount of asterisks is less than the value from myArray[counter]. So when you have counter = 0 You also have myArray[counter] = 12. Which means in your inner for loop, it will print asterisks until asterisk is no longer lesser than 12. Thus, going from … Read more
You need a data structure to help you out. Consider using a list. public class CatTable { List<SimpleStringProperty> properties = new ArrayList<>(); public void addProperty(SimpleStringProperty property) { properties.add(property); } public SimpleStringProperty getProperty(int index) { return properties.get(index); } public String getPropertyValue(int index) { return getProperty(index).get(); } // other stuff… } This way you have a single … Read more
To use java.util.PriorityQueue, your class need to implement Comparable or specify Comparator when create an instance of PriorityQueue. The elements in queue will be sorted from low value to high value, the element will be evaluated by Comparator.compare or Comparable.compareTo method. In your case, your class Person implements Comparable<Person>, you have to determine the order … Read more
Introduction Sharing text and numbers over the internet can be a daunting task, especially when it comes to developing a client-side application. Fortunately, there are a few simple solutions that can help you quickly and easily share text and numbers over the internet. In this article, we will discuss how to create a simple sharing … Read more
The most likely reason is that the default encoding for reading from standard input (via Scanner) does not match what your operating system uses. Note that the constructors for Scanner have an additional parameter String charsetName for the encoding type used to convert bytes from the file into characters to be scanned. Add the appropriate … Read more
You have not initialized your variable mStockageDao. Do this in onCreate() method: StockageDAO mStockageDao = new mStockageDao(AddStockageFragment.this); And before the code: Stockage createdStockage = mStockageDao.createStockage(stockqte,datestock,seulstock,LocalStock,1); call this mStockageDao.open(); NOTE: When you are done querying your database, call mStockageDao.close(); solved NullPointerException inserting into an SQLite database? [closed]
First you have to put your resultset into a list of Objects. For example: ArrayList<Extcteach> extcteachList = new ArrayList<Extcteach>(); while(resultset .next()) { Extcteach extcteach = new Extcteach (); extcteach.setAttr1 = (result.getString(“column1”) extcteach.setAttr2 = (result.getString(“column2”) /****THIS FOR EACH COLUMN OF YOUR TABLE****/ extcteachList.put(extcteach) } Now you have a list of object so in your jsp u … Read more
Introduction Regular expressions (regex) are a powerful tool for manipulating text and data. They are used in many programming languages for searching, replacing, and manipulating text. Regex can be used to split a string into multiple parts based on a pattern. This tutorial will explain how to use regex to split a string into multiple … Read more
Introduction Thread.join() is a method in Java that allows one thread to wait for the completion of another thread. It is commonly used to synchronize the execution of threads. However, it has been observed that Thread.join() does not always release the lock, which can lead to deadlocks and other issues. In this article, we will … Read more
Introduction Java is a powerful and versatile programming language that can be used to create a wide variety of applications. One of the most common tasks in Java is calling an integer to another method. This can be done in a few different ways, depending on the situation. In this article, we will discuss how … Read more
Introduction This article will provide a comprehensive guide on how to get the first and second characters from a string in multiple conditions. We will discuss the various methods of extracting the first and second characters from a string, including using the substring() method, the charAt() method, and the indexOf() method. We will also discuss … Read more
Introduction When developing an Android application, it is common to encounter errors related to intent throwing in the click listener. This can be a frustrating experience, as it can be difficult to identify the source of the error and how to fix it. Fortunately, there are a few steps that can be taken to troubleshoot … Read more
I think you have forgotten the () in the end of method called. Try testField.getText() or testField.getText().toString(). solved java netbeans 6.5.3 shows cannot find symbol getText