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我正在寻找一个清晰,简洁和准确的答案.

理想情况下,作为实际答案,虽然欢迎链接到良好的解释.

我试图定义一个抽象的Range类,它将作为许多范围类的基本实现.预期用途与此问题无关,但到目前为止,我有:

/**
 * Abstract generic utility class for handling ranges
 */
public abstract class Range<T extends Number> {

  // Variables to hold the range configuration
  private T start;
  private T stop;
  private T step;

  /**
   * Constructs a range by defining it's limits and step size.
   *
   * @param start The beginning of the range.
   * @param stop The end of the range.
   * @param step The stepping
   */
  public Range(T start, T stop, T step) {
    this.start = start; …