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Articles by karthikeya Boyini
Page 61 of 142
Using GUI upload to attach a file to email in SAP
You have to use parameters correctly in the function. You have to import the file length to an integer value. Importing File Length First, call the gui_upload_file method from the cl_gui_frontend_services class to upload the file and capture its length − CALL METHOD cl_gui_frontend_services=>gui_upload_file EXPORTING window_title = 'Select File' default_extension = '*' file_filter = 'All Files (*.*)|*.*' IMPORTING file_table ...
Read MoreC++ Program to Find All Roots of a Quadratic Equation
A quadratic equation is in the form ax2 + bx + c = 0. The roots of the quadratic equation are given by the following formula − x = −b ± √ b² − 4ac 2a The value b2 − 4ac is called the discriminant. It determines the nature of the roots. There are three cases − b2 > 4ac − The roots are real and different. b2 = 4ac − The roots are real and both roots are the same. b2 ...
Read MoreJava Program to Convert a Stack Trace to a String
The Java.io.StringWriter class is a character stream that collects its output in a string buffer, which can then be used to construct a string. Closing a StringWriter has no effect.The Java.io.PrintWriter class prints formatted representations of objects to a text-output stream.Using these two classes you can convert a Stack Trace to a String.Exampleimport java.io.PrintWriter; import java.io.StringWriter; public class StackTraceToString { public static void main(String args[]) { try { int a[] = new int[2]; System.out.println("Access element three :" + a[3]); } catch (ArrayIndexOutOfBoundsException e) { ...
Read MoreUsage of Bootstrap navbar-form class
To create navbar in CSS, use the navbar-form classExample Bootstrap Example My Website Submit
Read MoreJava program to print the transpose of a matrix
The transpose of a matrix is the one whose rows are columns of the original matrix, i.e. if A and B are two matrices such that the rows of the matrix B are the columns of the matrix A then Matrix B is said to be the transpose of Matrix A.To print the transpose of the given matrix −Create an empty matrix.Copy the contents of the original matrix to the new matrix such that elements in the [j][i] position of the original matrix should be copied to the [i][j] position of the new matrix.Print the new matrix.Examplepublic class TransposeSample{ ...
Read MoreBootstrap panel-heading class
Use the .panel-heading class to add a panel to headings in Bootstrap.You can try to run the following code to implement a panel-heading classExample Bootstrap Example Panel Heading Demo content Panel Heading Demo content
Read MoreJava program to calculate the average of numbers in Java
An average of a set of numbers is their sum divided by their quantity. It can be defined as −average = sum of all values / number of valuesHere we shall learn how to programmatically calculate average.Algorithm1. Collect integer values in an array A of size N. 2. Add all values of A. 3. Divide the output of Step 2 with N. 4. Display the output of Step 3 as average.Examplepublic class AverageOfNNumbers { public static void main(String args[]){ int i,total; int a[] = {0,6,9,2,7}; int n = 5; total = 0; for(i=0; i
Read MoreHow to perform sort using Java?
You can sort an array using sort() method of the Arrays class.Exampleimport java.util.Arrays; public class MainClass { public static void main(String args[]) throws Exception { int array[] = { 2, 5, -2, 6, -3, 8, 0, -7, -9, 4 }; Arrays.sort(array); printArray("Sorted array", array); int index = Arrays.binarySearch(array, 1); System.out.println("Didn't find 1 @ " + index); int newIndex = -index - 1; array = insertElement(array, 1, newIndex); printArray("With 1 added", array); } ...
Read MoreHow to Convert a Java 8 Stream to an Array?
To convert a stream to an Array in Java -Collect the stream to a list using the Collect interface and the Collectors class.Now convert the list to an array using the toArray() method.Exampleimport java.util.Arrays; import java.util.List; import java.util.stream.Collectors; import java.util.stream.Stream; public class J8StreamToArray { public static void main(String args[]) { String[] myArray = { "JavaFX", "OpenCV", "WebGL", "HBase" }; Stream stream = Stream.of(myArray); List list = stream.collect(Collectors.toList()); String[] str = list.toArray(new String[0]); System.out.println(Arrays.toString(str)); } }Output[JavaFX, OpenCV, WebGL, HBase]
Read MoreGet file extension name in Java
The file extension is the suffix that is attached to the computer file and it denotes the format of the file. A program that demonstrates getting the file extension name is given as follows −Exampleimport java.io.File; public class Demo { private static String fileExtension(File file) { String name = file.getName(); if(name.lastIndexOf(".") != -1 && name.lastIndexOf(".") != 0) return name.substring(name.lastIndexOf(".") + 1); else return ""; } public static void main(String[] args) { File file = new File("demo1.txt"); ...
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