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泛型 - 如何返回T的Map？(Generics - how to return a Map of T?)

class MyObject{}
class Human extends MyObject{}

public ConcurrentSkipListMap<String, <T extends MyObject>> get(Class<T> clazz, Object... vars){
    //...
}

//use the get() with
ConcurrentSkipListMap<String, Human> mapOfAllAdams = get(Human.class, "Adam");
 
 但是，返回值ConcurrentSkipListMap<String, <T extends MyObject>>给出编译错误，但是<T extends MyObject>T可以。 我应该写什么呢？ 

class MyObject{}
class Human extends MyObject{}

public ConcurrentSkipListMap<String, <T extends MyObject>> get(Class<T> clazz, Object... vars){
    //...
}

//use the get() with
ConcurrentSkipListMap<String, Human> mapOfAllAdams = get(Human.class, "Adam");
 
However, the return value ConcurrentSkipListMap<String, <T extends MyObject>> gives compilation error, but <T extends MyObject>T is ok. What should I write instead?

原文：https://stackoverflow.com/questions/50421668

更新时间：2024-01-14 15:01

最满意答案

<form id = "foo">
  <input type = "text" name = "text" id = "text"/>
  <input type = "submit" value = "change" ></input>
</form>
 
 删除动作属性和在JavaScript中  
$("#foo").submit(function(event) {
    event.preventDefault();
    $("#result").html('');
    $.ajax({
        url: "action.php",
        type: "post",
        data: $(this).serialize(),
        success: function(){
            alert("success");
            $("#result").html('Submitted successfully');
        },
        error:function(){
            alert("failure");
            $("#result").html('There is error while submit');
        }
    });
});
 
 你不需要在提交时调用任何函数，因为你已经在使用jquery提交了 

<form id = "foo">
  <input type = "text" name = "text" id = "text"/>
  <input type = "submit" value = "change" ></input>
</form>
 
remove action attribute and in javascript 
$("#foo").submit(function(event) {
    event.preventDefault();
    $("#result").html('');
    $.ajax({
        url: "action.php",
        type: "post",
        data: $(this).serialize(),
        success: function(){
            alert("success");
            $("#result").html('Submitted successfully');
        },
        error:function(){
            alert("failure");
            $("#result").html('There is error while submit');
        }
    });
});
 
you don't need to call any function on submit, as u are already using jquery submit

泛型 - 如何返回T的Map？(Generics - how to return a Map of T?)

最满意答案

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