Following is the Java program to search characters and substring in a string −Example Live Demoimport java.io.*; import java.lang.*; public class Demo {    public static void main (String[] args) {       String test_str = "Hello";       CharSequence seq = "He";       boolean bool_1 = ... Read More

Yes, parent and child classes can have a method with the same name.Exampleclass Parent {    constructor(parentValue) {       this.parentValue = parentValue;    }    //Parent class method name which is same as Child Class method name.    showValues() {       console.log("The parent method is called....."); ... Read More

To filter JSON data with multiple objects, you can use the concept of filter along with ==.Exampleconst jsonObject= [    {       studentId:101,       studentName:"David"    },    {       studentId:102,       studentName:"Mike"    },    {       studentId:103,   ... Read More

For this, you can use timeZone from JavaScript i.e. specific time zones for Asia and America respectively.For Asian Time Zonevar todayDateTime = new Date().toLocaleString("en-US", {timeZone: "Asia/Kolkata"});For American Time Zonevar americaDateTime = new Date().toLocaleString("en-US", {timeZone: "America/New_York"});Examplevar todayDateTime = new Date().toLocaleString("en-US", {timeZone: "Asia/Kolkata"}); todayDateTime = new Date(todayDateTime); console.log("The Asia Date time is="); ... Read More

Let’s say the following is our dropdown (select) −    Javascript    MySQL    MongoDB    Java Following is the code to display the selected value on Console −Example Live Demo Document Javascript MySQL MongoDB Java    function ... Read More

Type inference in Java refers to the automatic detection of the variable’s datatype. This automatic detection usually happens at compile time. It is a feature of Java 10 and it allows the developer to skip declaring the type that is associated with the local variables. Local variables are those which ... Read More

In order to call the parent method when both parent and child have the same method name and signature.You can use the below syntax −console.log(yourParentClassName.prototype.yourMethodName.call(yourChildObjectName));Exampleclass Super {    constructor(value) {       this.value = value;    }    display() {       return `The Parent class value is= ... Read More

Let’s say the following is our Student object −var studentObject = new Object(); studentObject["studentFirstName"] = "John"; studentObject["studentLastName"] = "Doe"; studentObject["studentAge"] = 22; studentObject["studentCountryName"] = "US"; studentObject["studentCollegeName"] = "MIT"; studentObject["studentSubjectName"] = "JavaScript";Let’s find the length.You can use the concept of keys available in object and if the key is present then ... Read More

Let’s say the following are our two arrays −var firstArray = ['John', 'David', 'Bob']; var secondArray = ['Mike', 'Sam', 'Carol'];To combine two arrays into an array of objects, use map() from JavaScript.Examplevar firstArray = ['John', 'David', 'Bob']; var secondArray = ['Mike', 'Sam', 'Carol']; var arrayOfObject = firstArray.map(function (value, index){   ... Read More

For this, you can use onclick=”yourFunctionName()”, and −document.getElementById(“”).value=’’Example Live Demo Document ClearInputText    function clearTheTextField(){       console.log("The text box       value="+document.getElementById('txtBox').value)       document.getElementById('txtBox').value = '';    } To run the above ... Read More