java - Passing inline constructed class as a Class argument to a method -

i need call following method.

void foo(class<? extends bar> cls);

for cls argument, need pass class overrides single method of bar.

i want know whether there way write definition of new class inline in above call without writing new class in separate file extends bar.

three options:

you create nested class within same class want use code; no need new file

public static void dosomething() {     foo(baz.class); }  private static class baz extends bar {     // override method }

you declare named class within method:

public static void dosomething() {     class baz extends bar {         // override method     }     foo(baz.class); }

declaring class within method highly unusual, mind you.

you use anonymous inner class, call getclass():

public static void dosomething() {     foo(new bar() {         // override method     }.getclass()); }

the last option creates instance of anonymous inner class just class object of course, isn't ideal.

personally i'd probably go first option.

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