Thread: help me with my buffered reader please! whats wrong?

import.java.io*;


public class Ship
{
public static void main(String[]args){
BufferedReader dataIn= new BufferedReader ( new InputStreamReader(System.in));

String name=" ";
int b;
try{
name=dataIn.readline();
}catch(IOException e){
System.out.println("ERROR");}

switch(b){
case 1:
System.out.println("Battleship");
break;
case 2:
System.out.println("Cruiser");
break;
default;
System.out.println("wrong");
break;
}
}
}

Originally Posted by jeremanalaotao

import.java.io*;


public class Ship
{
public static void main(String[]args){
BufferedReader dataIn= new BufferedReader ( new InputStreamReader(System.in));

String name=" ";
int b;
try{
name=dataIn.readline();
}catch(IOException e){
System.out.println("ERROR");}

switch(b){
case 1:
System.out.println("Battleship");
break;
case 2:
System.out.println("Cruiser");
break;
default;
System.out.println("wrong");
break;
}
}
}

Try this code this will work
===============================

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class Ship
{
public static void main(String[]args){
BufferedReader dataIn= new BufferedReader ( new InputStreamReader(System.in));
String name="";
int b=0;
try{
name=dataIn.readLine();
}catch(IOException e){
System.out.println("ERROR");}
switch(b){
case 1: System.out.println("Battleship");
break;
case 2:System.out.println("Cruiser");
break;
default:System.out.println("wrong");
break;
}
}
}

Originally Posted by pushpendra.saraswat@gmail

Try this code this will work
===============================

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class Ship
{
public static void main(String[]args){
BufferedReader dataIn= new BufferedReader ( new InputStreamReader(System.in));
String name="";
int b=0;
try{
name=dataIn.readLine();
}catch(IOException e){
System.out.println("ERROR");}
switch(b){
case 1: System.out.println("Battleship");
break;
case 2:System.out.println("Cruiser");
break;
default:System.out.println("wrong");
break;
}
}
}

when i type 1 it should be "Battleship" instead "wrong" appears..any number i type "wrong" appears

i really dont understand it .. T__T

What variable holds what the user typed in?

What variable is used in the switch statement?

Are they different variables?
How are they related?
Do you need to convert the user's input so it can be used in the switch statement?

variable b..yes i guess it needs to be converted?

i guess it needs to be converted?

See the Integer class for a method to convert a String to an int

im really a beginner here..can u teach me?i cant find it

Yes, beginners need to learn how to read the API doc.
Go to this Site: Java Platform SE 6
In the left hand column are listed the names of the classes.
Scan down or Find Integer and click on it.
The right hand section will display the API doc for the class. It has several sections.
General discussion.
Summaries of the following:
Fields
Constructors
Methods
Details for the above

thanks man!