在Java中隐藏"本地"类型参数

public class MyClass<T> {
    private T value;

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

    public T getValue() {
        return value;
    }
}

MyClass<String> stringInstance = new MyClass<>();
stringInstance.setValue("Hello, world!");
String value = stringInstance.getValue();

MyClass<Integer> integerInstance = new MyClass<>();
integerInstance.setValue(42);
Integer value = integerInstance.getValue();