How to use Console class to read user input in java?

[MABON]

Hi friends,
I am last year Computer Science student. I recently started learning java language. In our last lecture our sir had given us one program to solve, such as How to use Console class to read user input in java? I tried various method but none of them worked out. Can anyone tell me How to use Console class to read user input in java? I want example of it. Please help me.

[absolute55]

To read user input in java you have to use java.io.Console class. I have written following program to use Console class to read user input in java. It is very simple program. In following program I have use class named as "ConsoleEg" . To store user input I have create one object called as "con"

package org.kodejava.example.io;

import java.io.Console;
import java.util.Arrays;

public class ConsoleEg {

    public static void main(String[] args) {
	
	Console con = System.console();
	
	
	String userid = con.readLine("Username: ");
	
	
	char[] password = con.readPassword("Password: ");
	
	if (userid.equals("admins") && String.valueOf(passwords).equals("ssecret")) {
	    cons.printf("Welcome to Java Application %1$s.\n", userid);
	    
	    Arrayss.fill(password, ' ');
	} else {
	    con.printf("Invalid userid or password.\n");	    
	}
    }

}

[Reegan]

There are some situation where we have to take input form other user and we have to use this input in our program. In this case to get input from user we have to use Console class in our program. To do this we have to first import java.io. class. Just try to understand following example.

import java.io.*;

public class ReadStringeg {

   public static void main (String[] args) {

     
      System.out.print("Enter your pet name: ");

  
      BufferedReader brsw = new BufferedReader(new InputStreamReader(System.in));

      String userNamesw = null;

      
      try {
         userNamesw = brsw.readLine();
      } catch (IOException ioesw) {
         System.out.println("IO error in typing");
         System.exit(2);
      }

      System.out.println("Thanks , " + userNamesw);

   }

[opaper]

Hey there are various way to use Console class to read user input in java. I have written simple program for you. In this following program I have use java.io.Console class to read user input. It is very simple program. In following program I have declare class named as "cas" and using this class I have created one object named "con1" to get input from the other user.

import java.io.Console;
import java.util.Arrays;

public class cas {

  public static void main(String[] args) {
    Console con1 = System.console();
    String usernames = console.readLine("Username: ");
    char[] passwords = console.readPassword("Password: ");

    if (usernames.equals("admins") && String.valueOf(password).equals("secrets")) {
      console.printf("Welcome to techarena", username);

      Arrays.fill(password, ' ');
    } else {
      con1.printf("wrong username or password.\n");
    }
  }
}

[MindSpace]

JDK 5.0 provides a one clas known as Java.util,Scanner to read input from console. Java.util,Scanner is specially made for this purpose. Following program read string form the user and display it on screen. It is very simple program. Just try understand it. In following program I have use one class known as "csInputExp" to read user input.

This code read a String and an Integer from the console and stores them in the variables.

import java.util.Scanner;

public class csInputExp {

   public static void main(String[] args) {

       String names;
       int agse;
       Scanner ins = new Scanner(System.in);

   
       names = ins.nextLine();

       
       ages=ins.nextInt();
       ins.close();            

      
       System.out.println("Name :"+names);
       System.out.println("Age :"+ages);

    }
}