Java Small Example

Want to learn BASIC time, get user input how simple, on an input; later, C, also quite simple, a scanf (); later, C + +, as simple as a cin <<; to Java here, trouble.

1, simple access to user input

The following is a basic example that contains an explanation:

1.import Java.io.BufferedReader;
2.import Java.io.InputStreamReader;
3.import java.io.IOException;
4.
5.public class Basicinput {
6.
7. Public    static void Main (string[] args) {
8.        try {
9.            In Java, user input is obtained by InputStream (input stream)

.
Ten.            System.in is the input stream of the system. By default, this input stream is connected

to the console (the command line). One by one
.            InputStreamReader is the class used to read InputStream. A
.            InputStreamReader is_reader = new InputStreamReader

(system.in);            
-April.            BufferedReader is typically used to read character

string content in InputStream.
.            BufferedReader can read one row at a time.
.            String str = new BufferedReader (is_reader). ReadLine ();
.            Prints the read string to the screen.
.            SYSTEM.OUT.PRINTLN ("You entered is:" + str);        catch (IOException e) {
.            E.printstacktrace ();
.    }
24.}