difference between java and java 8

certainly! java is a widely-used programming language, and over the years, it has gone through several updates that have introduced new features and enhancements. java 8, released in march 2014, brought significant changes to the language and its libraries. here’s an informative tutorial on the differences between java (specifically pre-java 8) and java 8, along with code examples.

key differences between java and java 8

1. **lambda expressions:**
- **java:** prior to java 8, anonymous inner classes were used to implement functional interfaces.
- **java 8:** introduces lambda expressions, enabling more concise and readable code.

**example:**


2. **functional interfaces:**
- **java:** functional interfaces were defined using classes or abstract classes.

**example:**


3. **streams api:**
- **java:** collections were manipulated using loops and iterators.
- **java 8:** introduces the streams api for processing sequences of elements in a functional style.

**example:**


4. **default methods in interfaces:**
- **java:** interfaces could only declare abstract methods.
- **java 8:** introduces default methods in interfaces, allowing you to add new methods to interfaces without breaking existing implementations.

**example:**


5. **method references:**
- **java:** used lambda expressions to refer to methods.
- **java 8:** introduces method references, providing a clearer and more concise way to refer to methods.

**example:**


6. **optional class:**
- **java:** null checks were commonly used to avoid `nullpointerexceptions`.
- **java 8:** introduces the `optional` class to represent optional values, reducing the chances of null-related errors.

**example:**


7. **new date and time api:**

#JavaVsJava8 #Java8Features #numpy
java difference between & and &&
java difference between two instants
java difference between two dates
java difference between float and double
java difference between int and integer