How can we pass a function as a parameter in java

0 votes
Is it possible to do so?
Jun 27, 2018 in Java by Akrati
• 960 points
1,152 views

2 answers to this question.

0 votes

You can probably use the below code:

public T myMethod(Callable<T> func) 
{
    return func.call();
}
answered Jun 27, 2018 by Akrati
• 3,190 points
0 votes

Java 8 and above

Using Java 8+ lambda expressions, if you have a class or interface with only a single method, for example:

public interface MyInterface {
    String doSomething(int param1, String param2);
}

then anywhere where MyInterface is used, you can substitute a lambda expression:

class MyClass {
    public MyInterface myInterface = (p1, p2) -> { return p2 + p1; };
}
answered Aug 28, 2018 by Daisy
• 8,120 points

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