The StringBuffer and StringBuilder classes are used when there is a necessity to make a lot of modifications to Strings of characters.Unlike Strings, objects of type StringBuffer and String builder can be modified over and over again without leaving behind a lot of new unused objects.The StringBuilder class was introduced as of ... Read More

The capacity() method is used to return the current capacity of a vector. Capacity is the length of the array kept in the vector.Exampleimport java.util.Vector; public class VectorDemo {    public static void main(String[] args) {       Vector vec = new Vector();       vec.add(14);     ... Read More

The empty() method is used to test if this stack is or not.Exampleimport java.util.*; public class StackDemo {    public static void main(String args[]) {           Stack st = new Stack();       st.push("Java");       st.push("Source");       st.push("code");       ... Read More

With HTML, you can easily limit input length. However, with CSS3, it will not be possible, since CSS can’t be used to limit the number of input characters. This will cause a functional restriction.CSS deals with presentation i.e. how your web page will look. This is done with HTML attribute ... Read More

A favicon is a little icon visible on the web browser tab, just before the page title. It is generally a logo with a smaller size. The size of a favicon is 16x16, since it also gets displayed next to the URL of your site in a browser's address bar.The ... Read More

Local VariableLocal variables are declared in methods, constructors, or blocks.Local variables are created when the method, constructor or block is entered and the variable will be destroyed once it exits the method, constructor, or block.Access modifiers cannot be used for local variables.Local variables are visible only within the declared method, ... Read More

Whenever we execute SQL statements using the executeQuery() method, it returns a ResultSet object which holds the tabular data returned by the SELECT queries(in general).The ResultSet object contains a cursor/pointer which points to the current row. Initially this cursor is positioned before first row (default position).The next() methodThe next() method of ... Read More

To extract last n characters, simply print (length-n)th character to nth character using the charAt() method.ExampleLive Demopublic class ExtractingCharactersFromStrings {    public static void main(String args[]) {           String str = "Hi welcome to tutorialspoint";       int n = 5;       int initial = str.length()-5;       for(int i=initial; i

Declare an integer, initialize it with 0, in for loop increment it for each character.ExampleLive Demopublic class Sample {    public static void main(String args[]) {       String str = new String("Hi welcome to Tutorialspoint");       int count = 0;       for(int i = 0; i

You can concatenate two Strings using the concat() method.ExampleLive Demopublic class ConcatinatedStrings {    public static void main(String args[]) {             String str1 = new String("Tutorials");       String str2 = new String( "Point");       String res = str1.concat(str2);       System.out.println(res);    } }OutputTutorialsPoint