How to use Java function access modifiers in IDEA

The Java access modifiers in IDEA are used to control the visibility of elements, including the following four modifiers: public: visible to any class protected: visible to the current package and subclasses default (visible to the package): only to the current Package visible private: only visible to the current class In IDEA, you can use right-click, shortcut key (Alt Enter) or set options to modify the access modifier. By setting modifiers appropriately, you can keep your code modular and safe.

How to use access modifiers of Java functions in IDEA

In Java, access modifiers are used to control Visibility of classes, methods, fields, and constructors. IDEA provides advanced functionality to manage these modifiers intuitively.

Understanding access modifiers

There are four access modifiers in Java:

• public: Visible to any class
• protected: Visible to current package and subclasses
• default (visible to package): Visible to current package only
• private: Only visible to the current class

Use access modifiers in IDEA

IDEA provides many Methods to modify access modifiers:

• Right-click on the element : Right-click on the class, method, or field whose access you want to modify, and select " Modify Access Privileges".
• Use shortcut keys: Press Alt Enter (Windows/Linux) or Cmd Enter(Mac) The quick repair window pops up, and then select "Change Access Privileges".
• By Settings Options: Go to "Settings" ("Preferences" for macOS) > "Editor" > "Code Style" > "Java" and then in the right panel Configure access modifiers in .

Practical case

Here’s how to change the visibility of a method in IDEA:

1. Create a new Java class.
2. Add a method, such as public void myMethod().
3. Follow the steps mentioned above, right click on myMethod and select "Modify Access Privileges".
4. In the pop-up dialog box, select the required access modifier.

Tip

• IDEA automatically suggests appropriate access modifiers, based on the class scope and package structure.
• Access modifiers can also be applied to classes, fields, and constructors.
• Using appropriate access modifiers is critical to keeping your code modular and secure.

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