Is there a difference between these lines of code

Question

Is there a difference between these lines of code, and what is best to use it? thanks

public static void main( String[] args ){
   SwingUtilities.invokeLater( () -> component.method() ); }

vs

public static void main( String[] args ) {
   SwingUtilities.invokeLater( new Runnable() {
      public void run(){
            component.method();
    }} );
}

or

public static void main( String[] args ) {
   SwingUtilities.invokeLater( new Runnable() {
      public void run(){
            component::method();
    }} );
}

There are differences, yes. But the last one will not compile (should probably be `invokeLater(component::method);`) — ernest_k, Sep 17 '18 at 06:12
For the first two read this: https://alvinalexander.com/java/java-8-lambda-thread-runnable-syntax-examples For the last one, read this: https://stackoverflow.com/questions/20001427/double-colon-operator-in-java-8 — Pedreiro, Sep 17 '18 at 06:16
Only difference between method invocation inside lambda function and direct method reference is a one more line in a StackTrace. — SHaaD, Sep 17 '18 at 06:17

score 4 · Answer 1 · answered Sep 17 '18 at 06:12

The last one doesn't pass compilation.

Using either lambda expression

SwingUtilities.invokeLater(() -> component.method());

or method reference

SwingUtilities.invokeLater(component::method);

is shorter than the second one, which makes them preferable in Java 8 and later.

Is there a difference between these lines of code

1 Answers1