Java – Use the Kotlin library in Java

I’m trying to use the GitHub library (MeowBottomNavigation) in Android Studio. But it’s written in kotlin, and I can’t use the listeners in it.
The only thing given is this

bottomNavigation.setOnShowListener {
}

bottomNavigation.setOnClickMenuListener {
}

Recommended display use

(Function 1).

I’m not sure how to implement it in java. Any help would be appreciated.

I’m familiar with Java, but the library is written in Kotlin. Is there any way to use these listeners in Java?

bottomNavigation.setOnClickMenuListener(new 
Function1<MeowBottomNavigation.Model, Unit>() {
        @Override
        public Unit invoke(MeowBottomNavigation.Model p1) {
            int i = p1.getId();
            switch (i){
                case 4:
                    Toast.makeText(UserMainActivity.this, i, Toast.LENGTH_SHORT).show();
                    break;
                case  1:
                    Toast.makeText(UserMainActivity.this, i, Toast.LENGTH_SHORT).show();
                    break;
                case 2:
                    Toast.makeText(UserMainActivity.this, i, Toast.LENGTH_SHORT).show();
                    break;
                case 3:
                    Toast.makeText(UserMainActivity.this, i, Toast.LENGTH_SHORT).show();
                    break;
            }
            return Unit.INSTANCE;
        }
    });

Function0、Function1、Function2 … FunctionN is a higher-order function in kotlin.

After converting to Java, your click listener will look like this.

// Set Menu Click Listener 
bottomNavigation.setOnClickMenuListener(new Function1<MeowBottomNavigation.Model, Unit>() {
        @Override
        public Unit invoke(MeowBottomNavigation.Model p1) {
            return Unit.INSTANCE;
        }
    });

 Set Menu Show listener
bottomNavigation.setOnShowListener(new Function1<MeowBottomNavigation.Model, Unit>() {
        @Override
        public Unit invoke(MeowBottomNavigation.Model s) {
            return Unit.INSTANCE;
        }
    });