Joiner provides various methods to handle joining operations on string, objects, etc. Let us see an example −Exampleimport com.google.common.base.Joiner; import java.util.*; public class Demo{    public static void main(String[] args){       String[] my_arr = { "hel", null, "lo", "wo", "r", null, "ld" };       System.out.println("The original array is : "+ Arrays.toString(my_arr));       String my_result = Joiner.on('+').skipNulls().join(my_arr);       System.out.println("The joined string is : " + my_result);    } }OutputThe original array is [hel, null, lo, wo, r, null, ld] The joined string is hel+lo+wo+r+ldA class named Demo contains the main function, which defines ... Read More

To print single and multiple variables in Java, the code is as follows −Example Live Demopublic class Demo {    public static void main(String args[]){       String name_1 = "Hello";       String name_2 = "World";       System.out.println("Printing single variable");       System.out.printf("%s", name_1);       System.out.println("Printing multiple variables");       System.out.printf("First Name: %sLast Name: %s",name_1, name_2);    } }OutputPrinting single variable Hello Printing multiple variables First Name: Hello Last Name: WorldA class named Demo contains the main function, which defines two strings. These strings are displayed using the ‘println’ function and using the ‘printf’ function.

LinkedHashMapHash table and linked list implementation of the Map interface, with predictable iteration order. Let us see an example −Example Live Demoimport java.util.*; public class Demo {    public static void main(String args[]){       LinkedHashMap my_set;       my_set = new LinkedHashMap();       my_set.put(67, "Joe");       my_set.put(90, "Dev");       my_set.put(null, "Nate");       my_set.put(68, "Sara");       my_set.put(69, "Amal");       my_set.put(null, "Jake");       my_set.put(69, "Ral");       my_set.entrySet().stream().forEach((m) ->{          System.out.println(m.getKey() + " " + m.getValue());       });    } ... Read More

Java is a powerful and versatile programming language. It is used in various applications. It's known for its reliability, portability, and safety, which makes it a famous desire for developers. Java is likewise exceptionally easy to analyze, which makes it a terrific desire for novices. However, it's critical to remember that simplicity might operate as an obstacle. If you're not mindful, you could be caught by Java's accessibility and neglect to explore the unique opportunities the language offers. Let's have a look at some tips to assist you develop as a Java developer and improve your language proficiency. Tip 1: ... Read More

To convert floating to binary, the Java code is as follows −Example Live Demoimport java.io.*; public class Demo {    static void decimal_to_bin(int n){       int[] bin_num = new int[50];       int i = 0;       while (n > 0){          bin_num[i] = n % 2;          n = n / 2;          i++;       }       for (int j = i - 1; j >= 0; j--)       System.out.print(bin_num[j]);    }    public static void main (String[] args){   ... Read More

Following is an example showing widening primitive conversion −Example Live Demopublic class Demo {    public static void main(String[] args) {       System.out.print("H" + "E");       System.out.print('L');       System.out.print('L');       System.out.print('O');    } }OutputHELLOA class named Demo contains the main function. Here, the ‘print’ function is used to print specific characters in double quotes and then in single quotes. When the process of widening primitive conversion happens, the presence of ‘+’ operator is a must. This ‘+’ operator expects integer on both the left hand and right hand sides.

Yes, we can do that. Let us see an example −Example Live Democlass my_thread extends Thread{    public void run(){       try{          System.out.println ("The thread " + Thread.currentThread().getId() + " is currently running");       }       catch (Exception e){          System.out.println ("The exception has been caught");       }    } } public class Main{    public static void main(String[] args){       int n = 6;       for (int i=1; i

When the concept of multithreading is implemented, it is possible that changes made by one thread wouldn’t be visible to the other thread. This indicates that the view of each thread is inconsistent with respect to each other. This is known as memory consistency error.CPU might initiate main memory access in a different order, whereas the threads might access them in a different order.This is usually true when write operation is being performed, thereby avoiding the CPU wait time.The write operation is an atomic one, meaning no other operation would be performed by other threads when a write operation is ... Read More

Let us see an example to understand the concept of Thread Interference error −Example Live Demoimport java.io.*; class Demo_instance{    static int val_1 = 6;    void increment_val(){       for(int j=1;j

To merge contents of all the files in a directory, the Java code is as follows −Exampleimport java.io.*; public class Demo{    public static void main(String[] args) throws IOException{       File my_dir = new File("path to place where file is generated");       PrintWriter my_writer = new PrintWriter("The .txt where changes are stored");       String[] file_names = my_dir.list();       for (String file_names : fileNames){          System.out.println("Content read from " + file_names);          File my_file = new File(my_dir, file_names);          BufferedReader my_reader = new BufferedReader(new ... Read More