How do you implement an interface in Java?

1. Anonymous Inner Class: You declare and instantiate the class at the same time, providing implementations for the interface methods within the class definition.

“`java
MyInterface obj = new MyInterface() {
@Override
public void method1() {
// Provide implementation for method1
}

@Override
public int method2(String str) {
// Provide implementation for method2
return 0;
}
};
“`

2. Override Methods: As before, you override the interface methods within the anonymous inner class, providing the desired implementations.

“`java
@Override
public void method1() {
// Provide implementation for method1
}

@Override
public int method2(String str) {
// Provide implementation for method2
return 0;
}
“`

3. Use the Object: You can then use the object of the anonymous inner class wherever the interface type is expected, just like with regular implementations.

“`java
obj.method1(); // Invoke method1
int result = obj.method2(“example”); // Invoke method2 and store the result
“`