how we can use the user input in java.

by Using inputreadbuffer class.

or use textbox by using JDK tools in java.

using BufferedReader class or by using Scanner class which works from JDK1.5

plz tell me the error:-


class input
{
public static void main(String args[]);
Throws IOException;
{ int i;
String str;
BufferReaderbr=newBufferReader(newInputstreamReader(System.in));
System.out.println("enter name");
str = br.Readline()
System.out.println(str);
}

this is santhosh
to perform input operation in java either we can user iostreams or some predefined classes exist in java.util.* package and those util package classes like Random,Scanner(possible to use only from jdk 1.5) etc
i am demonstrating a simple example with Scanner class
in Scanner class we have diffrent methods exist for reading different type of values.
for integer nextInt(), for double nextDouble() etc.

Example:
import java.util.*;
class InputDemo
{
public static void main(String args[])
{
Scanner in=new Scanner(System.in);
int a,b;
System.out.println("enter a,b values : ");
a=in.nextInt();
b=in.nextInt();
System.out.println("a = "+a+"\tb = "+b);
}
}
and one more way to perform input operation is Command line arguments but every command line argument is treated as String object but to work with integers,float values we have to wrap the String objects into integer,float etc using Wrapper classes like Integer,Float etc defined in java.lang packages