Например:
package work.basil.example.threading.multitasking;
import java.util.Comparator;
public record Job(
int id ,
int amt
) implements Comparable < Job >
{
@Override
public int compareTo ( final Job job )
{
return Comparator.comparingInt( Job :: id ).thenComparingInt( Job :: amt ).compare( this , job );
}
}
Если компилятор не оптимизирует, я бы создал частную статическую конечную константу, например:
package work.basil.example.threading.multitasking;
import java.util.Comparator;
public record Job(
int id ,
int amt
) implements Comparable < Job >
{
private static final Comparator < Job > COMPARATOR = Comparator.comparingInt( Job :: id ).thenComparingInt( Job :: amt );
@Override
public int compareTo ( final Job job )
{
return Job.COMPARATOR.compare( this , job );
}
}
Подробнее здесь: https://stackoverflow.com/questions/782 ... he-compile