The HTML DOM table tBodies Collection returns a collection of all elements in a table in an HTML document.SyntaxFollowing is the syntax −object.tBodiesProperties of tBodies CollectionPropertyExplanationlengthIt returns the number of elements in the collection in an HTML documentProperties of tBodies CollectionMethodExplanation[index]It returns the specified index element from ... Read More

The HTML DOM table rows Collection returns a collection of all elements of a table in an HTML document.SyntaxFollowing is the syntax −object.rowsProperties of rows Collectionelements in the collection in an HTML document.PropertyExplanationlengthIt returns the number of elements in the collection in an HTML document.Methods of rows Collectionelement ... Read More

The HTML DOM table deleteRow() method deletes a element from the table in an HTML document.SyntaxFollowing is the syntax −object.deleteRow(index)Here, index represent a number that specifies the position of the row to delete.Let us see an example of HTML DOM table deleteRow() method −Example Live Demo    body ... Read More

The HTML DOM table deleteTHead() method delete the element from the table in an HTML document.SyntaxFollowing is the syntax −object.deleteTHead()Let us see an example of HTML DOM table deleteTHead() method −Example Live Demo    body {       color: #000;       background: lightblue;     ... Read More

Let’s say we have set out inut string in myStr variable. Now loop through until the length of string and check for alphabets with ASCII values −for (int i = 0; i < myStr.length(); i++) {    char c = myStr.charAt(i);    if (!(c >= 'A' && c = 'a' && c = 'A' && c = 'a' && c

At first, convert the string into character array. Here, name is our string −char[] ch = name.toCharArray();Now, loop through and find whether the string contains only alphabets or not. Here, we are checking for not equal to a letter for every character in the string −for (char c : ch) { ... Read More

Let’s say our string is −String str = "Amit123";Now, using allMatch() method, get the boolean result whether the string has only alphabets or now −boolean result = str.chars().allMatch(Character::isLetter);Following is an example to check if a string contains only alphabets using Lambda Expressions −Exampleclass Main {    public static void main(String[] ... Read More

Let’s say we have a string “That’s good!” and within that we need to insert the text “no”. Therefore, the resultant string should be “That’s no good!” −String str = "That's good!"; String newSub = "no ";Now, the index where the new sub string will get inserted −int index = ... Read More

The HashMap class uses a hashtable to implement the Map interface. This allows the execution time of basic operations, such as get( ) and put( ), to remain constant even for large sets.Following is the list of constructors supported by the HashMap class.Sr.NoConstructor & Description1HashMap( )This constructor constructs a default ... Read More

The ArrayList class extends AbstractList and implements the List interface. ArrayList supports dynamic arrays that can grow as needed. Array lists are created with an initial size. When this size is exceeded, the collection is automatically enlarged. When objects are removed, the array may be shrunk.Let us now see how ... Read More