Java 16 新特性：record类

record range(int start, int end){}

public record range(int start, int end){}

public class DidispaceTest {
    public record range(int start, int end){}
}

public class DidispaceTest {
  public void test() {
    public record range(int start, int end){}
  }
}

public final class range{
    final int start;
    final int end;

    public range(int start, int end) {
        this.start = start;
        this.end = end;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        range range = (range) o;
        return start == range.start && end == range.end;
    }

    @Override
    public int hashCode() {
        return Objects.hash(start, end);
    }

    @Override
    public String toString() {
        return "range{" +
                "start=" + x +
                ", end=" + y +
                '}';
    }

    public int start(){
        return start;
    }

    public int end(){
        return end;
    }
}

range r = new range(100, 200);

record range(int start, int end){
  int distance(){
    return end - start;
  }
}

range r = new range(100, 200);
r.distance();