What is the difference between “const” and “val”?

Question

I have recently read about the const keyword, and I\'m so confused! I can\'t find any difference between const and the val keyword, I

Answer 1

You can transform the Kotlin to Java. Then you can see const has one more static modifier than val. The simple code like this.

Kotlin:

const val str = "hello"
class SimplePerson(val name: String, var age: Int)

To Java(Portion):

@NotNull
public static final String str = "hello";

public final class SimplePerson {
   @NotNull
   private final String name;
   private int age;

   @NotNull
   public final String getName() {
      return this.name;
   }

   public final int getAge() {
      return this.age;
   }

   public final void setAge(int var1) {
      this.age = var1;
   }

   public SimplePerson(@NotNull String name, int age) {
      Intrinsics.checkParameterIsNotNull(name, "name");
      super();
      this.name = name;
      this.age = age;
   }
}