Partial implementation of an abstract method?

Question

For example, I have many classes that all need a certain method. In this method, all these classes need one line of code, the remainder of the method is different.

How could I achieve something like this:

void method(){
    everybodyDoesThisStuff;

    // more individual stuff 

    // more individual stuff
}

Abstract methods cannot have a body, and if you were not to make it abstract you would then override the method and lose it.

Answer 1

You should make the method that does the "more individual stuff" abstract, not the method itself.

// AbstractBase.java
public abstract class AbstractBase {
    public final void method() {
        everybodyDoesThisStuff();
        doIndividualStuff();
    }

    abstract void doIndividualStuff();

    private void everybodyDoesThisStuff() {
        // stuff that everybody does
    }
}

// ConcreteClass.java
public class ConcreteClass extends AbstractBase {
    void doIndividualStuff() {
         // do my individual stuff
    }
}