Form validation is one of the most important parts of any user based website which collects a basic info about the user. The data entered by the user through the HTML forms must be verified. This concept is known as form validation. The data is checked for its validity using PHP scripts. The can be …
PHP gives the developer a variety of ways to handle and control the forms built using HTML. The data from the HTML form can be sent to the PHP scripts using either the $_GET or $_POST. There is nothing extraordinary about building the forms controlled by PHP scripts. The form can be built by just …
Creating an Immutable Class in JAVA Java provides us the facility to create our own immutable class just like String class. In such a class, if we create its object then we cannot perform any change in its object. And if we try to perform any changes then a new object will be created with …
equalsIgnoreCase() We use this method to perform the case insensitive comparison between 2 strings. Prototype: public boolean equalsIgnoreCase(String str) Example: String str = “STEVE”; String s = “steve”; System.out.println(str.equals(s)); //output will be “true” subString() This method returns the sub string beginning at the given index to the end of the string. Prototype: public String subString(int …
Objects of String class in java.lang package are immutable, which means that once we create the object, we cannot perform any changes to it. And if we do, then the program create a new object. For example: String str = new String(“Michael”); str.concate(” Jackson”); System.our.println(“String is: “+str); Output of the above code snippet is: String …