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import java.io.*;

public class TypeWriter
{
long typingSpeed; //in nano seconds, letter per speed
File fileToType;

public TypeWriter(){
typingSpeed = 100;
fileToType = null;
}

public void setTypingSpeed( long typingSpeed ){
this.typingSpeed = typingSpeed;
}

public void setFileToType( String fileToType ){
if( fileToType.endsWith( ".txt" ) ){
this.fileToType = new File( fileToType );
if( ! this.fileToType.exists() ){
type( "-----------\nFile Not Found.....\n\n" );
System.exit( 0 );
}
}else{
type( "-----------\nFile is Not a Text Document.......\n\n" );
}
if( this.fileToType == null ){
type( "-----------\nFile Not Set.....\n\n" );
System.exit( 0 );
}
}

public void type( String line ){
for( int i=0; i < line.length(); i++ ){
System.out.print(line.charAt(i) + "" );
try{
Thread.sleep( typingSpeed );
}catch(Exception e){}
}
}

public void startTyping(){
if( fileToType == null ){
type( "-----------\nFile Not Set.....\n\n" );
System.exit( 0 );
}
try{
System.out.println( "\n\nFile Typing Started....\n\n" );
BufferedReader br = new BufferedReader( new FileReader( fileToType ) );
String str = "";
while( (str = br.readLine() ) != null ){
type( str );
}
}catch(Exception e){}
}

public static void main( String args[] ){
TypeWriter tw = new TypeWriter();
tw.setTypingSpeed( 50 );
tw.setFileToType( args[0] );
tw.startTyping();
}
}

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