![]() All these functions are explained in the table below. ![]() If you want to take a string as input then the Scanner class provides the nextLine() method. For example, for taking input of an integer you can use nextInt() function, and for taking long as the input you can use nextLong(). You can call this function using the object of the Scanner class. For this purpose, the Scanner class provides the nextdata_type() function, where data_type is the data type of input. This data_type can be int, float, long, etc. Suppose you want to take numerical input of a particular data_type. Here in the above example you are taking input from the user through the input stream, but if you want to read data or take input from the file then you can pass the object of class “File” to read the input from the file in the Scanner class constructor. Scanner class implements Closeable interface(which tells Java Virtual Machine that class can be cloned) and Iterator interface (cursor that is used to step through the collection of objects in java ). The Scanner class inherits the Object class. It is the easiest way to take input in Java. Scanner class breaks the input into tokens/parts using a delimiter(a sequence of one or more characters that is used to separate independent values) which is by default whitespace. from the user, and this class belongs to the java.util package. It is mainly used to read input of in-built data types like int, double, float, strings, etc. ![]() For the purpose Scanner class in java is used. For example you want to take input of integer or float variable from the user. Suppose you are writing a java program and you want to take input from the user. In Java we can do this using the Scanner class, using which we can take inputs of all in-built data types in Java like boolean, int, etc. A lot of time, while we are coding, it becomes necessary to take the input from the users.
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