Java 泛型到变量

Question

java泛型如何分配给变量然后传递它？ 我不想这样做:

MyClass myClass = new MyClass();

if (someCondition) {
    myClass.<Foo>getDetails();
} else if (someCondition) {
    myClass.<Bar>getDetails();
} ... more conditional objects

我怎样才能做到这一点:

MyClass myClass = new MyClass();
JavaGeneric jg;
if (someCondition) {
   jg = Foo;
} else if (someCondition) {
   jg = Bar;
}

myClass.<jg>getDetails();

这可能吗？我尝试搜索有关 java generics 的文档但没有这样的示例或如何将其分配给变量，他们只有将其传递到 method/class (T) 的示例.

更新:

getDetails()位于 object :

public class MyClass {
   <T> void getDetails() {
      //call method that uses T...
   }
}

Answer 1

interface JavaGeneric {
public String getDetails(); //also you can have default methods implementation here.
}

class Foo implements JavaGeneric {
 public String getDetails(){
   return "Foo Details";
 }
}


class Bar implements JavaGeneric {
 public String getDetails(){
   return "Bar Details";
 }
}


// Somewhere in code

JavaGeneric jg;
if (someCondition) { //lets say this is false
   jg = Foo;
} else if (someCondition) { // lets say this is true
   jg = Bar;
}

jg.getDetails(); //we will get "Bar Details"