The signature of equals() from Object class is 'public boolean equals(Object object)' : equals method « Utility Classes « SCJP

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SCJP » Utility Classes » equals method 
8.2.2.The signature of equals() from Object class is 'public boolean equals(Object object)'
public class MainClass {
  public static void main(String[] argv) {

    MyClass myClass = new MyClass();

    MainClass mainClass = new MainClass();

    System.out.println(myClass.equals(mainClass));
  }
}

class MyClass {
  public boolean equals(Object object) {
    if (object instanceof MyClass == false) {
      return false;
    }
    return true;
  }
}
false
8.2.equals method
8.2.1.equals() and hashCode()
8.2.2.The signature of equals() from Object class is 'public boolean equals(Object object)'
8.2.3.Implementing an equals() Method
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