a.java

import java.util.stream.Stream;
class a { public static Object f() {
        int n = 42;
        return Stream.<Integer>of().map(x -> x * n);
} }

bytecode

class a {
  a();
    Code:
       0: aload_0
       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
       4: return

  public static java.lang.Object f();
    Code:
       0: bipush        42
       2: istore_0
       3: iconst_0
       4: anewarray     #2                  // class java/lang/Integer
       7: invokestatic  #3                  // InterfaceMethod java/util/stream/Stream.of:([Ljava/lang/Object;)Ljava/util/stream/Stream;
      10: iload_0
      11: invokedynamic #4,  0              // InvokeDynamic #0:apply:(I)Ljava/util/function/Function;
      16: invokeinterface #5,  2            // InterfaceMethod java/util/stream/Stream.map:(Ljava/util/function/Function;)Ljava/util/stream/Stream;
      21: areturn

  private static java.lang.Integer lambda$f$0(int, java.lang.Integer);
    Code:
       0: aload_1
       1: invokevirtual #6                  // Method java/lang/Integer.intValue:()I
       4: iload_0
       5: imul
       6: invokestatic  #7                  // Method java/lang/Integer.valueOf:(I)Ljava/lang/Integer;
       9: areturn
}