Java Articles - Page 598 of 745

Firstly, we have considered the following two dates.SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd"); Date d1 = s.parse("2018-10-15"); Date d2 = s.parse("2018-11-10");Now, use the compareTo() method to compare both the dates. The results are displayed on the basis of the return value.if (d1.compareTo(d2) > 0) {    System.out.println("Date1 is after Date2!");    } else if (d1.compareTo(d2) < 0) {       System.out.println("Date1 is before Date2!");    } else if (d1.compareTo(d2) == 0) {       System.out.println("Date1 is equal to Date2!");    } else {       System.out.println("How to get here?"); }Example Live Demoimport java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public class ... Read More

In this article, we will learn how to validate U.S. zip codes using a regular expression in Java. The program checks if a given string is a valid U.S. zip code, either in the standard five-digit format or the extended nine-digit format.Zip Code Format In the U.S., zip codes are five digits, with each digit representing a specific part of the United States.Let’s say we have the following zip code. String zipStr = "12345"; Now, set the following regular expression to match zip codes in America. String reg = "^[0-9]{5}(?:-[0-9]{4})?$"; Matching (Validating) a ZIP CodeThe following are the steps to ... Read More

In Java, handling strings with quotes can be managed by checking and manipulating the string’s start and end. This example demonstrates how to remove double quotes from both the beginning and end of a string. Problem Statement Given a string enclosed in double quotes, write a Java program to remove these enclosing quotes. The result must be the original string without the enclosing double quotes. Input String with double quotes= "Demo Text" Output String after removing double quotes = Demo Text Steps to remove the leading and trailing quotes from a string Below are the steps to remove the leading ... Read More

To shift left in a BigInteger, use the shiftLeft() method.The java.math.BigInteger.shiftLeft(int n) returns a BigInteger whose value is (this

To shift bits in a BigInteger, use the shiftLeft() or shiftRight() method.shiftLeft() methodThe java.math.BigInteger.shiftLeft(int n) returns a BigInteger whose value is (this > n). Sign extension is performed. The shift distance, n, may be negative, in which case this method performs a left shift. It computes floor(this / 2n).Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       BigInteger one;       one = new BigInteger("25");       one = one.shiftRight(3);       System.out.println("Result: " +one);    } }OutputResult: 3

To flip a bit in a BigInteger in Java, use the flipBit() method. This method returns a BigInteger whose value is equivalent to this BigInteger with the designated bit flipped.Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       BigInteger one, two;       one = new BigInteger("7");       one = one.flipBit(3);       System.out.println("Result: " +one);    } }OutputResult: 15Let us see another example.Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       BigInteger bi1, bi2;       bi1 = ... Read More

To clear a bit in a BigInteger in Java, use the clearBit() method. It returns a BigInteger whose value is equivalent to this BigInteger with the designated bit cleared.Example Live Demoimport java.math.*; public class BigIntegerDemo {    public static void main(String[] args) {       BigInteger one, two;       one = new BigInteger("7");       two = one.clearBit(2);       System.out.println("Result: " +two);    } }OutputResult: 3Let us see another example.Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       BigInteger bi1, bi2;       bi1 = new ... Read More

The setBit() method is used in Java to return a BigInteger whose value is equivalent to this BigInteger with the designated bit set.Example Live Demoimport java.math.*; public class BigIntegerDemo {    public static void main(String[] args) {       BigInteger one, two;       one = new BigInteger("7");       two = one.setBit(3);       System.out.println("Result: " +two);    } }OutputResult: 15Let us see another example.Example Live Demoimport java.math.*; public class Demo {    public static void main(String[] args) {       BigInteger bi1, bi2;       bi1 = new BigInteger("9");       // setbit ... Read More

The given task is to write a Java program to check whether a string is a pangram or not. A string is called a pangram if and only if it contains all the letters of the English alphabet, regardless of their case. Example Scenario:Let's understand the problem with an example - Input: "The quick brown fox jumps over the lazy dog" Output: Yes, the string is a pangram Read the input String, you can find all the letters of the English alphabet in it. Therefore, it is a pangram string. How to Check if a String is a Pangram ... Read More

A ternary operator uses 3 operands and it can be used to replace the if else statement. This can be done to make the code simpler and more compact.The syntax of the ternary operator is given as follows −Expression ? Statement 1 : Statement 2In the above syntax, the expression is a conditional expression that results in true or false. If the value of the expression is true, then statement 1 is executed otherwise statement 2 is executed.A program that demonstrates the ternary operator in Java is given as follows.Example Live Demopublic class Example {    public static void main(String[] args) ... Read More