The java.lang.Integer.toBinaryString() method returns a string representation of the integer argument as an unsigned integer in base 2.ExampleFollowing is an example to implement the toBinaryString() method in Java −import java.lang.*; public class IntegerDemo {    public static void main(String[] args) {       int i = 170;       System.out.println("Number ... Read More

The java.lang.Long.toOctalString() method returns a string representation of the long argument as an unsigned integer in base 8.ExampleLet us now see an example −import java.lang.*; public class Main {    public static void main(String[] args) {       long l = 220;       System.out.println("Number = " + ... Read More

The java.lang.Math class contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions. This class provides mathematical functions in Java.Let us see some of these functions −Sr.NoMethod & Description1static double abs(double a)This method returns the absolute value of a double value.2static float ... Read More

The java.util.Random class instance is used to generate a stream of pseudorandom numbers. Following are the methods provided by the Random class to set the seed of the random number, generate the next random number.Let us learn about some of these methods −Sr.NoMethod & Description1protected int next(int bits)This method generates the next ... Read More

The java.util.calendar class provides the calendar functions in Java. Is an abstract class that provides methods for converting between a specific instant in time and a set of calendar fields such as YEAR, MONTH, DAY_OF_MONTH, HOUR, and so on, and for manipulating the calendar fields, such as getting the date ... Read More

Iterator in Java is used to traverse each and every element in the collection. Using it, traverse, obtain each element or you can even remove. ListIterator extends Iterator to allow bidirectional traversal of a list, and the modification of elements.Following are the Interator Functions in Java −Modifier and TypeMethod & ... Read More

Dictionary is an abstract class that represents a key/value storage repository and operates much like Map. Given a key and value, you can store the value in a Dictionary object. Once the value is stored, you can retrieve it by using its key. Thus, like a map, a dictionary can ... Read More

The toArray() method of the Ints class returns an array containing each value of collection, converted to a int value in the manner of Number.intValue(). Following is the syntax −public static int[]    toArray(Collection

The max() method of the Ints class returns the greatest value present in array. Following is the syntax −static int max(int... array)Let us first see an example −Exampleimport com.google.common.primitives.Ints; class Demo {    public static void main(String[] args) {       int[] myArr = { 10, 20, 30, 40, ... Read More

The lastIndexOf() method of the Ints class returns the index of the last appearance of the value target in array. The syntax is as follows −public static int lastIndexOf(int[] arr, int target)Here, arr is the array of int values, whereas target is the int value for which we are finding ... Read More