The asList() method of the Ints class in Java Guava’s returns a fixed-size list backed by the specified array. The syntax is as follows −public static List    asList(int[] arr)Here, arr is the array to back the list.Let us see an example to implement the asList() method of the Ints ... Read More

The java.lang.Integer.toHexString() method returns a string representation of the integer argument as an unsigned integer in base 16.Let us now see an example −Exampleimport java.lang.*; public class Main {    public static void main(String[] args) {       int i = 160;       System.out.println("Number = " + ... Read More

The java.lang.Math.signum(float f) returns the signum function of the argument; zero if the argument is zero, 1.0f if the argument is greater than zero, -1.0f if the argument is less than zero.Let us now see an example −Exampleimport java.security.*; import java.util.*; public class Main {    public static void main(String[] ... Read More

The string representation for the signature object can be obtained using the method getString() in the class java.security.Signature. This includes information such as the object state, algorithm name etcLet us now see an example −Exampleimport java.security.*; import java.util.*; public class Main {    public static void main(String[] argv) {   ... Read More

The initSign() method initialize this object for signing. If this method is called again with a different argument, it negates the effect of this call.Let us now see an example −Exampleimport java.security.KeyPair; import java.security.KeyPairGenerator; import java.security.PrivateKey; import java.security.Signature; import java.util.Scanner; public class Main {    public static void main(String args[]) ... Read More

The provider for the signature object can be obtained using the method getProvider() in the class java.security.Signature.Let us now see an example −Exampleimport java.security.*; import java.util.*; public class Main {    public static void main(String[] argv) {       try {          Signature signature = Signature.getInstance("SHA256withRSA"); ... Read More

A class which contains the abstract keyword in its declaration is known as abstract class. Abstract classes may or may not contain abstract methods, i.e., methods without body. But, if a class has at least one abstract method, then the class must be declared abstract.If a class is declared abstract, it cannot be instantiated. To ... Read More

HashSet extends AbstractSet and implements the Set interface. It creates a collection that uses a hash table for storage.A hash table stores information by using a mechanism called hashing. In hashing, the informational content of a key is used to determine a unique value, called its hash code.To traverse through a ... Read More

A signature object that can implement the required signature algorithm can be obtained using the method getInstance() in the class java.security.Signature.Let us now see an example −Exampleimport java.security.*; import java.util.*; public class Main {    public static void main(String[] argv) {       try {         ... Read More

The name of the algorithm for the signature object can be obtained using the method getAlgorithm() in the class java.security.Signature.Let us now see an example −Exampleimport java.security.*; import java.util.*; public class Main {    public static void main(String[] argv) {       try {          Signature ... Read More