Programming Articles - Page 2669 of 3366

In this article, we will learn how to display a webpage in JEditorPane using Java. The program will load a specified webpage, and display it within a GUI window. If the connection to the webpage fails, a message will appear indicating the connection issue. This setup can be useful for embedding simple web content within Java applications. Steps to display a webpage in JEditorPaneFollowing are the steps to display a webpage in JEditorPane −We will import the necessary classes from the java.io package and javax.swing package.Create a JEditorPane object to serve as the component that will display the webpage.Use the setPage() ... Read More

Let’s say we have the following string:String str = "YuBM787Nm";Now to display it as IntStream, use filter() and map() as shown below:int res = str.chars() .filter(Character::isDigit) .map(ch → Character.valueOf((char) ch)).sum();The following is an example to display string as IntStream:Examplepublic class Demo {    public static void main(String[] args) {       String str = "YuBM787Nm";       int res = str.chars() .filter(Character::isDigit) .map(ch -> Character.valueOf((char) ch)).sum();       System.out.println("String as IntStream = "+res);    } }OutputString as IntStream = 166

Use HTMLEditorKitt to change the font size with HTML. With that, use the JEditorPane setText() method to set HTML:HTMLEditorKit kit = new HTMLEditorKit(); editorPane.setEditorKit(kit); editorPane.setSize(size); editorPane.setOpaque(true); editorPane.setText(" This is a demo text with a different font!");The following is an example to change font size with HTML in Java Swing JEditorPane:Exampleimport java.awt.BorderLayout; import java.awt.Container; import java.awt.Dimension; import javax.swing.JEditorPane; import javax.swing.JFrame; import javax.swing.text.html.HTMLEditorKit; public class SwingDemo extends JFrame {    public static void main(String[] args) {       SwingDemo s = new SwingDemo();       s.setSize(600, 300);       Container container = s.getContentPane();       s.demo(container, container.getSize());   ... Read More

Let us first create a List:List emp = Arrays.asList(    new Employee("John", "Marketing", 5),    new Employee("David", "Operations", 10));We have class Employee with name, department and rank of employees.Now, create summary for the rank like count, average, sum, etc:IntSummaryStatistics summary = emp .stream() .collect(Collectors.summarizingInt(p -> p.rank));The following is an example to create IntSummaryStatistics from Collectors in Java:Exampleimport java.util.Arrays; import java.util.IntSummaryStatistics; import java.util.List; import java.util.stream.Collectors; public class Demo {    public static void main(String[] args) throws Exception {       List emp = Arrays.asList(new Employee("John", "Marketing", 5), new Employee("David", "Operations", 10));       IntSummaryStatistics summary = emp .stream() .collect(Collectors.summarizingInt(p → ... Read More

In general,  Java Array is a collection of homogeneous elements and Streams are sequence of objects from a source, which supports aggregate operations. We can create a IntStream object holding a sequence of integer values. To convert the integer array to an IntStream object you need to use the Arrays.stream() method. IntStream: The IntStream extends the BaseStream interface. It defines the stream of primitive integer value. We can import the IntStream class from java.util package. The Arrays.stream() method The Arrays.stream() method creates a sequential stream from an array. It is a static method in the Arrays. Following is the syntax ... Read More

The C library function int remove(const char *filename) deletes the given filename so that it is no longer accessible.Following is the declaration for remove() function.int remove(const char *filename)This function takes the filename. This is the C string containing the name of the file to be deleted. On success, zero is returned. On error, -1 is returned, and errno is set appropriately.Example#include #include int main () {    int ret;    FILE *fp;    char filename[] = "file.txt";    fp = fopen(filename, "w");    fprintf(fp, "%s", "This is tutorialspoint.com");    fclose(fp);    ret = remove(filename);    if(ret == 0) { ... Read More

The C library function int rename(const char *old_filename, const char *new_filename) causes the filename referred to by old_filename to be changed to new_filenameFollowing is the declaration for rename() function.int rename(const char *old_filename, const char *new_filename)The parameters are old_filename − This is the C string containing the name of the file to be renamed and/or moved, new_filename − This is the C string containing the new name for the file.On success, zero is returned. On error, -1 is returned, and errno is set appropriately.Example#include int main () {    int ret;    char oldname[] = "file.txt";    char newname[] = ... Read More

Here we will see what type of operations can be performed on struct variables. Here basically one operation can be performed for struct. The operation is assignment operation. Some other operations like equality check or other are not available for stack.Example#include typedef struct { //define a structure for complex objects    int real, imag; }complex; void displayComplex(complex c){    printf("(%d + %di)", c.real, c.imag); } main() {    complex c1 = {5, 2};    complex c2 = {8, 6};    printf("Complex numbers are:");    displayComplex(c1);    displayComplex(c2); }OutputComplex numbers are: (5 + 2i) (8 + 6i)This works fine as ... Read More

Command Line ArgumentsCommand line arguments are input parameters which allow user to enable programs to act in a certain way like- to output additional information, or to read data from a specified source or to interpret the data in a desired format.Python Command Line ArgumentsPython provides many options to read command line arguments. The most common ways are -Python sys.argvPython getopt modulePython argparse modulePython sys moduleThe sys module stores the command line arguments (CLA) into a list and to retrieve it, we use sys.argv. It’s a simple way to read command line arguments as string.import sys print(type(sys.argv)) print('The command ... Read More

In this article, we will see how we can create an empty functions in Python. A function is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and a high degree of code reusing. Function blocks begin with the keyword def followed by the function name and parentheses ( ( ) ). Here, we will see examples of Empty Functions. Empty Function Use the pass statement to write an empty function in Python −Example # Empty function in Python def demo(): pass Above, ... Read More