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kotlinlang

What is the equivalent of const val of koltin in Java?

```    public static final int abc = 10;```

Isn’t val equivalent to final keyword
or

val is equivalent to final keyword. Just giving example of const val abc = 10

If you use final on primitive types, it's equivalent to const val.

in Kotlin,
```val foo = getHello()
const val bar = "hello"```
mean two different things. in Java,
```static final String foo = getHello();```
always means the first, and
```static final String bar = "hello";```
always means the second. Java does not have a straightforward way to express (non-`const`) `val baz = "Hello"` with a constant expression

exactly const is a reserved keyword in Java, but it doesn't mean final class is a const class, but it a sealed class which cannot be inherited. Same for any variable.

`const` is a keyword in Java which is never used anywhere (same as `goto`). Java's `final` doesn't mean `sealed` (that's what the new `sealed` keyword means). Java's `final`, when applied to a class or method, means the same as it does in Kotlin (just with different defaults).

`sealed class` does not mean "no inheritance", it means "closed inheritance"

"though it cannot be inherited but..." - *talking about final class only*

In java there is no val but they do have var, you can use <https://www.google.com/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=&amp;ved=2ahUKEwiknpHsx9_5AhWOYcAKHfFFA8kQFnoECAwQAQ&amp;url=https%3A%2F%2Fprojectlombok.org%2F&amp;usg=AOvVaw2I1yZsNyZNywgaVKV4kHG0|Lombok> to get the ability to use val. so val is final var

lets also not forget that `const val` in kotlin gets inlined by the compiler at the call site, while `static final String` has no guarantee of being inlined

it is guaranteed if it is a constant, as per JLS

the fact that it's so hard to control this aspect of your public API/ABI is definitely a mark against Java though