public class Main{
public static String insertSpace( String str )
{
String chr;
StringBuffer buffer = new StringBuffer();
for( int i = 0; i < str.length(); i++ ){
chr = String.valueOf( str.charAt( i ));
if(( i > 0 ) && ( chr.matches( "[A-Z]")))
buffer.append( " ");
buffer.append( chr );
}
return buffer.toString();
}
}