input

import java.io.*;
public class inputkeyboard
{
public static String inputString()
{

int karakter;
String str="";
boolean selesai=false;

while (! selesai)
{
try
{
karakter=System.in.read();
if(karakter<0||(char)karakter=='\n')selesai=true;
else if((char)karakter !='\r')str=str +(char)karakter;
}
catch(java.io.IOException e)
{
System.err.println("Ada Kesalahan");
selesai=true;
}
}
return str;
}
}

import javax.swing.JOptionPane;
public class inputmessage{
public static void main(String args[]){

String name = JOptionPane.showInputDialog(" Masukan Nama : " );
String msg = "Hello " +name;
JOptionPane.showMessageDialog (null, msg);
}
}