可优化的代码段

boolean haveApps = apps.contains(query);
if(haveApps)
    app.add("apps");
boolean haveBooks = books.contains(query);
if(haveBooks)
    app.add("books");
boolean haveMusic = music.contains(query);
if(haveMusic)
    app.add("music");

大家会如何优化上面的代码呢？