szymonkozak

 $ kotlinc Foo.kt 
 $ javap -c Foo > bytecode_kotlin.txt

szymonkozak

 $ javac Foo.java
 $ javap -c Foo > bytecode_java.txt

szymonkozak

Compiled from "Bar.kt"
public final class Bar {
  public final boolean is valid();
    Code:
       0: aload_0
       1: getfield      #10                 // Field "is valid":Z
       4: ireturn

  public final boolean is_valid();
    Code:

szymonkozak

Compiled from "Foo.kt"
public final class Foo {

  public final int getNumber();
    Code:
       0: aload_0
       1: getfield      #10                 // Field isValid:Z
       4: ifeq          11
       7: iconst_1
       8: goto          12

szymonkozak

Compiled from "Foo.java"
public final class Foo {

  public final int getNumber();
    Code:
       0: aload_0
       1: invokevirtual #5                  // Method java/lang/Object.getClass:()Ljava/lang/Class;
       4: pop
       5: iconst_1
       6: ireturn

szymonkozak

public final class Bar {
   private final boolean is valid = true;
   private final boolean is_valid = true;

   public final boolean is_valid/* $FF was: is valid*/() {
      return this.is valid;
   }

   public final boolean is_valid() {
      return this.is_valid;

szymonkozak

class Bar {
    val `is valid` = true
    val is_valid = true
}

szymonkozak

public final class Foo {
   private final int product = this.getNumber() * 2;
   private final boolean isValid = true;

   public final int getNumber() {
      return this.isValid ? 1 : 0;
   }

   public final int getProduct() {
      return this.product;

szymonkozak

class Foo {

    val number
        get() = if (isValid) 1 else 0

    val product = number * 2

    val isValid = true
}

szymonkozak

abstract class PrefDelegate<T>(val prefKey: String) {

    companion object {
        private var context: Context? = null

        /**
         * Initialize PrefDelegate with a Context reference
         * This method needs to be called before any other usage of PrefDelegate
         */
        fun init(context: Context) {