Java泛型相关知识

Java里面的泛型在实际开发中运用的很多，比如分页插件，List接口的实现类ArrayList。

public class ArrayList<E> extends AbstractList<E> implements List<E>

public static <T> void main(String[] args) {

List<T> mylist=new ArrayList<T>();

}

}

一个简单的泛型

public class MyObject<T> extends BaseData {
    private T valueOne;
    private T valueTwo;

    public MyObject(T valueOne, T valueTwo) {
        this.valueOne = valueOne;
        this.valueTwo = valueTwo;
    }

    public T getValueOne() {
        return valueOne;
    }

    public void setValueOne(T valueOne) {
        this.valueOne = valueOne;
    }

    public T getValueTwo() {
        return valueTwo;
    }

    public void setValueTwo(T valueTwo) {
        this.valueTwo = valueTwo;
    }

    public static void main(String[] args) {
        MyObject<String> object = new MyObject<>("String one!", "String two");
        System.out.println("value one " + object.valueOne + " value two " + object.valueTwo);
    }
}