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The find() function of TypedArray accepts a string value representing the name of a function, tests whether the elements in the array passes the test implemented by the provided function, if so, returns the first element which passes the test else, returns undefined.SyntaxIts Syntax is as followstypedArray.find(function_name)Example Live Demo JavaScript Array every Method var int32View = new Int32Array([21, 19, 65, 21, 14, 66, 87, 55 ]); document.write("Contents of the typed array: "+int32View); document.write(""); function testResult(element, index, array) { var ... Read More
The find() function of TypedArray accepts a string value representing the name of a function, tests whether the elements in the array passes the test implemented by the provided function, if so, returns the index of the first element which passes the test else, returns -1.SyntaxIts Syntax is as followstypedArray.findIndex(function_name)Example Live Demo JavaScript Array every Method var int32View = new Int32Array([21, 19, 65, 21, 14, 66, 87, 55 ]); document.write("Contents of the typed array: "+int32View); document.write(""); function testResult(element, index, array) { ... Read More
The array type can be checked using the java.lang.Class.getComponentType() method. This method returns the class that represents the component type of the array. The array length can be obtained in int form using the method java.lang.reflect.Array.getLength().A program that demonstrates this is given as follows −Example Live Demoimport java.lang.reflect.Array; public class Demo { public static void main (String args[]) { int[] arr = {6, 1, 9, 3, 7}; Class c = arr.getClass(); if (c.isArray()) { Class arrayType = c.getComponentType(); System.out.println("The array is of type: ... Read More
The forEach() function of TypedArray object accepts a string value representing the name of a function and executes it per every element in the array.SyntaxIts Syntax is as followstypedArray.forEach()Example Live Demo JavaScript Array every Method var int32View = new Int32Array([21, 19, 65,21, 14, 66, 87, 55 ]); document.write("Contents of the typed array: "+int32View); document.write(""); document.write("Result: "); function testResult(element, index, array) { document.writeln(element+100); } int32View.forEach(testResult); //document.write("Result: "+result); OutputContents of the typed array: 21,19,65,21,14,66,87,55 Result: 121 119 165 121 114 166 187 155
The includes() function of the TypedArray object accepts a value and verifies whether this typed array contains the specified element. If the array contains the given element it returns true else, it returns false.SyntaxIts Syntax is as followstypedArray.includes()Example Live Demo JavaScript Array every Method var int32View = new Int32Array([21, 19, 65, 21, 14, 66, 87, 55 ]); document.write("Contents of the typed array: "+int32View); document.write(""); var contains = int32View.includes(66); if(contains) { document.write("Array contains the specified element"); ... Read More
Use the replace() method to replace a specific character with another. Let’s say the following is our string and here we are replacing a whitespace with a $ character.String str1 = "Orange is the new Black!";Now, use the replace() method to replace a character with $str1.replace(' ', '$');Example Live Demopublic class Demo { public static void main(String[] args) { String str1 = "Orange is the new Black!"; System.out.println("String: "+str1); String str2 = str1.replace(' ', '$'); System.out.println("Updated string: "+str2); } }OutputString: Orange is the new Black! Updated string: ... Read More
In order to match the first name and last name using regular expression, we use the matches method in Java. The java.lang.String.matches() method returns a boolean value which depends on the matching of the String with the regular expression.Declaration −The java.lang.String.matches() method is declared as follows −public boolean matches(String regex)Let us see a program to validate the first name and last name with regular expressions −Example Live Demopublic class Example { public static void main( String[] args ) { System.out.println(firstName("Tom")); System.out.println(lastName("hanks")); } // validate first name public static boolean firstName( String ... Read More
The indexOf() function of the TypedArray object accepts a value and verifies whether the typed array contains the specified element. If so, this function returns the index of the array at which the specified element found, if the element occurred multiple timed this function returns the first index among them. If the array doesn’t contain the specified element the indexOf() function returns -1.SyntaxIts Syntax is as followstypedArray.indexOf(50)Example Live Demo JavaScript Array every Method var int32View = new Int32Array([21, 19, 65, 21, 14, 66, 87, 55, 66, 97, 66 ]); ... Read More
Let’s say the following is our string.String str = "The Walking Dead!";We want to replace the substring “Dead” with “Alive”. For that, let us use the following logic. Here, we have used a while loop and within that found the index of the substring to be replaced. In this way, one by one we have replaced the entire substring.int beginning = 0, index = 0; StringBuffer strBuffer = new StringBuffer(); while ((index = str.indexOf(subStr1, beginning)) >= 0) { strBuffer.append(str.substring(beginning, index)); strBuffer.append(subStr2); beginning = index + subStr1.length(); }The following is the complete example to replace substrings.Example Live Demopublic class ... Read More
The join() function of the TypedArray object joins the contents of the typed array as single string and returns it. To this method you can pass a separator to separates the elements of the array.SyntaxIts Syntax is as followstypedArray.join(':')Example Live Demo JavaScript Array every Method var int32View = new Int32Array([21, 19, 65, 21, 14, 66, 87, 55 ]); document.write(""); var contains = int32View.join(''); document.write("."+contains); document.write(""); document.write(int32View.join(':')); document.write(""); document.write(int32View.join('-')); ... Read More