#Bluej scanner class how to#
#Bluej scanner class full#

We will revisit the same example next with nextLine() method to get the desired output.

#Bluej scanner class full#

In the following example, user is asked to enter the full name, however the next() method captured only the first name as it stopped reading input as soon as it found a whitespace. It doesn’t read the user input after whitespace. The next() method reads the input until a whitespace is encountered. Where the nextLine() method is used to read the line of text, the next() method reads the word entered by the user. The next() method is different from the nextLine() method. ('Sum of entered numbers: '+(num1+num2)) read user input and store it in an int variable We are using the nextInt() method twice to get two numbers from user and then we are printing the sum of entered numbers. This method reads the integer value entered by the user. Here, we are demonstrating the use of nextInt() method. It reads a long value entered by the user It reads a short value entered by the user This method reads a double value entered by the user This method reads a byte value entered by the user It is used to get string representation of user input

This method reads a word entered by the userĬhecks if there is another line of text entered by the userĬhecks if there is another int value input by the user It reads a line of text entered by the user It reads a boolean value entered by the user It reads a float value entered by the user It reads an int value entered by the user Let’s list down some of the frequently used methods of Scanner class. There are several methods available in this class. In the above example, we have seen the use of nextLine() method. ('Your Name is: '+firstName+' '+lastName) read user input and store it in a string variable We have used the nextLine() method of Scanner as this method is used to read the line of text entered by the user. This is to read the data from standard input.ģ. While creating an object of Scanner class, we passed the System.in in the Scanner class constructor. Alternatively, You can also import Scanner like this: java.util.*, this will import all the classes present in the java.util package.Ģ.

The first statement import is mandatory when using Scanner class. This is the first example of Scanner class, let’s discuss everything in detail.ġ. Example 1: Read user input text using Scanner The Scanner class is present in the java.util package so be sure import this package when you are using this class. In this guide, we will discuss java Scanner class methods as well as examples of some of the important methods of this class. This is one of the important classes as it provides you various methods to capture different types of user entered data.

#Bluej scanner class how to#

In this tutorial, you will learn Java Scanner class and how to use it in java programs to get the user input.