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  1. class Person {
  2. 	private String name;
  3. 	protected String x;
  4. 	protected int y;
  5. 	protected double z;
  6. 	protected int abc;
  7.  
  8. 	public Person(String name, String x, int y, double d, int abc) {
  9. 		this.name = name;
  10. 		this.x = x;
  11. 		this.y = y;
  12. 		this.z = d;
  13. 		this.abc = abc;
  14. 	}
  15. }
  16.  
  17. class Student extends Person {
  18.  
  19. 	public Student(String name, String x, int y, double d, int abc) {
  20. 		super(name, x, y, d, abc);
  21. 	}
  22.  
  23. 	public boolean equals(Student obj) {
  24. 		System.out.println("inside student equals");
  25. 		return true;
  26. 	}
  27.  
  28. 	public boolean equals(Person obj) {
  29. 		System.out.println("inside person equals");
  30. 		return false;
  31. 	}
  32. }
  33.  
  34. public class Main {
  35. 	public static void main(String[] args) {
  36. 		Student s1 = new Student("John", "1", 10, 1.0, 10);
  37. 		Student s2 = new Student("John", "1", 10, 1.0, 10);
  38.  
  39. 		Person s3 = new Student("John", "1", 10, 1.0, 10);
  40. 		Person s4 = new Student("John", "1", 10, 1.0, 10);
  41.  
  42. 		System.out.println(s1.equals(s2)); // 1
  43. 		System.out.println(s1.equals(s3)); // 2
  44.  
  45. 		System.out.println(s3.equals(s4)); // 3
  46. 		System.out.println(s3.equals(s1)); // 4
  47. 	}
  48. }
Success #stdin #stdout 0.08s 32452KB
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stdin
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Standard input is empty
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inside student equals
true
inside person equals
false
false
false
https://ideone.com/ZocFc1
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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