| Scala | Java |
| 1. Scala is a combination of both object-oriented and functional programming language | 1. Java is a general-purpose object-oriented programming language |
| 2. It's Readability is less | 2. It's Readability is more |
| 3. The process of compiling source code is very slow | 3. The process of compiling source code is very slow. |
| 4. It is not backward compatible | 4. It is backward compatible
|
| 5. It support operator overloading | 5. It doesn't support operator overloading. |
| 6. In Scala, every method or function is treated as a variable | 6. In Java, every function is treats as an object |
| 7. In Scala, variables are by default of immutable type. | 7. In Java, variables are by default of mutable type. |