method-reference – Read For Learn

The target type of this expression must be a functional interface in MethodReferences

January 24, 2022 by admin

Because that’s a method reference, the usage is a bit different: The argument that the consumer takes (s) will be still passed to the println method. here is Oracle’s tutorial on this.

Java Pass Method as Parameter

December 19, 2021 by admin

Edit: as of Java 8, lambda expressions are a nice solution as other answers have pointed out. The answer below was written for Java 7 and earlier… Take a look at the command pattern. Edit: as Pete Kirkham points out, there’s another way of doing this using a Visitor. The visitor approach is a little more involved – your nodes all need to be … Read more