How to return multiple defferent objects from a Java method?

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How to return multiple objects from a Java method?

Is there any way to return multiple defferent objects from a Java method

for example i want return string ,int ,object ,.. etc

thanks

Answer 1

You can return a Map<Class, Object> containing the resulting objects' types mapped with their values.

public Map<Class, Object> doSomeStuff(){
  Map<Class, Object> map = HashMap<Class, Object>();
  map.put(String.getClass(), "This is an example");
  map.put(Object.getClass(), new Object());
  //...
  return map;
}

// You can then retrieve all results by
String stringVal = map.get(String.getClass());
Object objectVal = map.get(Object.getClass());

Answer 2

Make a new class and return that class.

//Give this a more descriptive name reflecting what it REALLY is.
public static class ReturnData{
protected String foo
protected int bar

public ReturnData(String foo, int Bar) {
  ...
}
String getFoo() {
  ...
}
int getBar() {
  ...
}

Then in your method instantiate the object with what you want to return

MyMethod(...){
   ...
   ...
   return new ReturnData(foo, bar);
}

Viola! You returned both foo and bar at same time.

Answer 3

Not explicitly. You can make your own class that contains eveything, and return that, or you can return some form of Object array (Object[]) or list (like an ArrayList) that contains everything, but that is not recommended.

EDIT: Also you can use generics as mentioned above, this falls under the category of making your own class, thought I would mention it seperately too though.