y.java

class y{static int s(int x){return(x<1?x:x%10+s(x/10));}public static void main(String a[]){int i=0,j=0;for(;i++<1e6;j+=s(i)==42?1:0);System.out.print(j);}}

Java 8 does improve things. I actually tried to change your for loop to use Java 8 as well:

java.util.stream.IntStream.range(0, 1000000).filter(x->(x+"").chars().map(x->x-48).sum()==42).count()

Although arguably more readable, your crazy minified for loop ended up shorter due to the need to import IntStream and spell out 1e6 fully :)