覆盖类中的equals（）和hashCode（）方法

class MyClass {

  private String name;/**时代Java公众号 - N o w J a  v a . c o m**/


  public MyClass(String name) {

    this.name = name;

  }


  /* Re-implement the equals() method */

  public boolean equals(Object otherObject) {

    // Are they the same?

    if (this == otherObject) {

      return true;

    }


    // Is otherObject a null reference?

    if (otherObject == null) {//nowjava

      return false;

    }


    // Do they belong to the same class?

    if (this.getClass() != otherObject.getClass()) {

      return false;

    }


    // Get the reference of otherObject is a SmartCat variable

    MyClass otherCat = (MyClass) otherObject;


    // Do they have the same names

    boolean isSameName = (this.name == null ? otherCat.name == null : this.name

        .equals(otherCat.name));


    return isSameName;

  }