What are the different types of access modifiers in Java?

Access modifiers in Java are keywords used to define the accessibility of a class, method, or variable. There are four types of access modifiers in Java:

• Public: Public access modifier allows a class, method, or variable to be accessed from anywhere in the program. This means that the class, method, or variable can be accessed from any other class or package.
• Private: Private access modifier restricts the accessibility of a class, method, or variable to only within the same class. This means that the class, method, or variable cannot be accessed from any other class or package.
• Protected: Protected access modifier allows a class, method, or variable to be accessed within the same package or from any subclass of the class in any package.
• Default: Default access modifier, also known as package-private access, allows a class, method, or variable to be accessed within the same package but not from any other package.

Access modifiers provide a way to control the level of encapsulation in a program, which can help to improve code organization and prevent unwanted modifications to code. Understanding the different types of access modifiers and when to use them is an important aspect of programming in Java.