Ways to get user input in Java

1. Using the Java.util.Scanner class

Using the Scannerd Next () method, the test code reads as follows:

1. Scanner sc=New Scanner (system.in);
2. System.out.println ("Waiting Inputchar:");
3. String N=sc.next ();
4. SYSTEM.OUT.PRINTLN (n);

Of course remember to introduce the relevant package:

1. Import Java.util.Scanner;

2. Using the BufferedReader class to obtain user input

BufferedReader class is a subclass of Java.IO.Reader

The instance code is as follows:

2. Using BufferedReader to get user input
4. BufferedReader receives an instance of the Java.io.reader class
6. Here we can use Java. Io. InputStreamReader
10. When using flow operation, remember to add exception handling, or you will report an error
12. Try
14. {
16. BufferedReader bt=New BufferedReader (new InputStreamReader (system.in));
18. String S=bt.readline ();
20. System.out.println (s);
22. }
24. catch (Java.io.IOException ex)
26. {
28. System.out.println (Ex.getmessage ());
30. }

Here to add a try. catch () exception handling block, or the following exception is reported:

1. Exception in thread "main" java.lang.Error:Unresolved compilation problem:
2. Unhandled Exception type IOException

Ways to get user input in Java