在构造方法里获取当前类的泛型

定义

public class MyClass<T> {private Class<T> clazz;public MyClass() {Type type = this.getClass().getGenericSuperclass();if (type instanceof ParameterizedType parameterizedType) {if (parameterizedType.getActualTypeArguments() != null && parameterizedType.getActualTypeArguments().length > 0) {this.clazz = (Class<T>) parameterizedType.getActualTypeArguments()[0];}}}public String getGenericTypeName() {return this.clazz.getName();}}

子类

public class MyStringClass extends MyClass<String> {
}

验证

    @Testvoid test() {MyStringClass myClass = new MyStringClass();System.out.println(myClass.getGenericTypeName());}

输出：java.lang.String