如何将kotlin中的密封类转换为java

sealed class SealedClass {
    class SubClass1 : SealedClass()
    class SubClass2 : SealedClass()
}

fun main() {
    val obj1: SealedClass = SealedClass.SubClass1()
    val obj2: SealedClass = SealedClass.SubClass2()

    processSealedClass(obj1)
    processSealedClass(obj2)
}

fun processSealedClass(obj: SealedClass) {
    when (obj) {
        is SealedClass.SubClass1 -> println("SubClass1")
        is SealedClass.SubClass2 -> println("SubClass2")
    }
}

public class JavaClass extends SealedClass {
    // 实现密封类的子类的具体逻辑
}

public class Main {
    public static void main(String[] args) {
        SealedClass obj1 = new SealedClass.SubClass1();
        SealedClass obj2 = new SealedClass.SubClass2();

        processSealedClass(obj1);
        processSealedClass(obj2);
    }

    public static void processSealedClass(SealedClass obj) {
        if (obj instanceof SealedClass.SubClass1) {
            System.out.println("SubClass1");
        } else if (obj instanceof SealedClass.SubClass2) {
            System.out.println("SubClass2");
        }
    }
}