Web Reference: Jul 9, 2013 · It is the easiest way to read input in a Java program, though not very efficient. To create an object of Scanner class, we usually pass the predefined object System.in, which represents the standard input stream (Keyboard). For example, this code allows a user to read a number from System.in: Java Exceptions using try...throw...catch with the Electric BIll as an example. The discussion covers inputMismatchException and IllegalrgumentException and ... Jan 16, 2026 · The Scanner class, introduced in Java 5, belongs to the java.util package allows developers to read input from different sources easily. The Scanner class can read input from keyboard (console), files, strings, and data streams.
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