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public class MyGenericClass<T> {
    private T value;

    public void setValue(T value) {
        this.value = value;
    }

    public T getValue() {
        return value;
    }
}

public class Main {
    public static void main(String[] args) {
        MyGenericClass<String> myString = new MyGenericClass<>();
        myString.setValue("Hello");
        System.out.println(myString.getValue()); // 杈撳嚭: Hello

        MyGenericClass<Integer> myInteger = new MyGenericClass<>();
        myInteger.setValue(123);
        System.out.println(myInteger.getValue()); // 杈撳嚭: 123
    }
}

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