More then 20 years after it’s release, Java still tops the popular TIOBE index as the most popular programming language in the world. But is it time for Java to be relegated to the ranks of Cobalt and Fortran ? Itself replaced by something shiner on the JVM stack ? Take a quick journey back-in-time to explore the progression of programming languages; from Assembly to C to Java. Then dive into 3 solid JVM language alternatives in search of the next big thing, and explore the benefits they bring to the Java space.

1. THE FUTURE OF JAVA
THE EVOLUTION OF PROGRAMMING LANGUAGES
Victor Szoltysek

2. 1. New Language
2. ?
3. Profit!

3. Why NodeJS ? Non-Blocking IO / Web-Scale

4. JAVA
▸20+ years
▸James Gosling (Calgary, Canada)
▸Key at Pivotal
▸Future ? Alternatives ?

5. - Java (circa 2018)
The reports of my death are greatly
exaggerated.

6. 1969

7. - Margaret Hamilton
(with stacks of assembly
code she wrote for the first
moon landing mission)

9. ?43 00 00 00 inc ebx
MACHINE CODE ASSEMBLY

11. No matter the programming language chosen, a
professional developer will write an average of
10 lines of code (LoC) day.
Frederick Brooks

12. 1980

13. 1980 - MOBILE

14. ?
mov eax, $x
cmp eax, 0x0C
jg end
beginning:
inc eax
cmp eax, 0x0C
jle beginning
end:
while(x <= 12)
{
x++;
}
ASSEMBLY C

16. 2000

17. 2000 - MOBILE

18. ?
for (i = 0; i < m; i++) {
free(a[i]);
}
free(a);
// Trick Question ! Nothing :)
C Java

20. * Famous Linus Torvalds C++ rant!

21. 2018

22. 2018 - MOBILE

23. 3 JVM OPTIONS

24. ?
public class ObjectExample {
private int value;
private String name;
public ObjectExample(int value, String name) {
this.value = value;
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getValue() {
return value;
}
public void setValue(int value) {
this.value = value;
}
public static void main(String[] args) {
ObjectExample object = new ObjectExample(1,"Awesome");
System.out.println("Name " + object.getName() + " Value " +
object.getValue());
}
}
class ObjectExample {
int value
String name
}
object = new ObjectExample(value:1,name:"Awesome")
println "Name $object.name Value $object.value"
Java Groovy

25. Led to innumerable errors, vulnerabilities, and
system crashes, which have probably caused a
billion dollars of pain and damage in the last forty
years.
Tony Hoare
(on his invention of the null reference)

26. Kotlin
var a: String = "abc"
a = null // compilation error

27. C
Assembly
Java
Kotlin/Scala/Groovy ??
Productivity
+ Abstraction

29. C
Assembly
Java
Kotlin
Productivity
+ Abstraction
(specific cases)
GO
(sometimes)

30. IaaS
Bare-Metal
PaaS
FaaS (sometimes)
CaaS
(i.e. Kubernetes)
Productivity
+ Abstraction
PCF :)

31. ▸Abstraction as a Core Productivity Accelerator
▸Diminishing returns with Higher Level Languages
▸Kotlin / Groovy ? / Scala as JVM alternatives
TAKEAWAYS

32. ADDITIONAL MATERIAL
and .. www.mongodb-is-web-scale.com