Introduction This article will discuss the issue of the BookOrder class not rendering results in Test. The BookOrder class is a class that is used to store and manage book orders. It is used to store information about the books that have been ordered, such as the title, author, and price. The class also has … Read more
Because you are not initializing any thing in your constructor so it takes default value for all variable in you class. So you can change your constructor like : private String author; private String title; private int quantity; private double costPerBook; private String orderDate; private double weight; private char type; //R,O,F,U,N public BookOrder(String author, String … Read more
Does this help? a = 5; i=++a + ++a + a++; => i=6 + 7 + 7; (a=8) a = 5; i=a++ + ++a + ++a; => i=5 + 7 + 8; (a=8) The main point is that ++a increments the value and immediately returns it. a++ also increments the value (in the background) but … Read more
Introduction This post provides a solution to the problem of counting the total number of words in an array without the spaces. The solution involves using a combination of the .split() and .length methods to achieve the desired result. The post will explain the steps involved in the process and provide a working example of … Read more
In this scenario, the string has to split by spaces and it will give an array of both words and empty spaces. The next step will be to count the non-empty words, so for that we need to iterate the array and check for non-empty words and increment the count. You can try in this … Read more
This is a ternary operator the way it works is : condition ? (things to do if true) : (things to do if false); In your code what it does is : if value of Math.random() – 0.5 < 0 then assign change a values of -5 else assign change a value of 5. 1 … Read more
milliseconds = (int) (appCurrentTime % 1000); String hours, minutes=String.format(“%02d”, mins), seconds=String.format(“%02d”, secs), miliSeconds=String.format(“%03d”, milliseconds); time.setText(minutes + “:” + seconds+ “:” + miliSeconds.substring(0,2) ); solved Formatting mili seconds in java using only hundredth and tenth position of the mill seconds
Your file format should be a .csv, so it would look like: name,lastname,address,number, name,lastname,address,number, name,lastname,address,number, I know I shouldn’t be posting code for you, but here: class Contact { public String name, lastname, address, number; public Contact(String name, String lastname, String address, String number) { this.name = name; this.lastname = lastname; this.address = address; this.number … Read more
If all operand of a division are int, then you’ll do int division and it would provide only an int value (or an int rounded value if you store in double) At least one of the operand should be double double h = 1.0 / 4; System.out.println(h); // 0.25 h = 1d / 4; System.out.println(h); … Read more
Introduction Java is a powerful programming language that is used to create a wide variety of applications. However, when it comes to dividing numbers, Java has changed the way it works in recent versions. This can be confusing for those who are used to the old way of dividing numbers in Java. In this article, … Read more
Solved this problem. i’m inserting the newly added value into the database but not depending on the database to retrieve and display it but i created new textview and i’m directly getting the text from edittext and setting it to new textview that i created and displaying it.it worked 🙂 solved Not able to display … Read more
You cannot cast an Android listview to your own listview. Instead of “com.example.shabeer.listview.ListView” you need a “android.widget.ListView”. This is the one you are referencing in your xml layout file. public static android.widget.ListView list_view; and list_view = (android.widget.ListView)findViewById(R.id.listView_id); 0 solved Cannot cast ‘android.view.View’ to ‘com.example.shabeer.listview.ListView’
Introduction This article provides a solution to the error “Cannot cast ‘android.view.View’ to ‘com.example.shabeer.listview.ListView’”. This error occurs when attempting to cast an android.view.View object to a com.example.shabeer.listview.ListView object. The solution provided in this article will help developers understand the cause of the error and how to resolve it. Solution The error message indicates that you … Read more
The body of the inner loop is executed n times. The body of the outer loop is executed for all powers of 2 from 1 to n and there are about log2(n) of them, hence the global complexity O(n.log(n)) 1 solved Showing the order of growth of the function
You can use the modulo operator to determine whether the word has an even or odd number of letters (% in java) if ( (word.length % 2) == 1 ) { //odd } else { //even } then just split the string in half and compare the reverse of the end with the front int … Read more