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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	static class Test {
  11.  
  12. 		private String name;
  13.  
  14. 		public Test(String name) {
  15. 			this.name = name;
  16. 		}
  17.  
  18. 	    public String GetName() { return name; }
  19. 	    public void SetName(String name) { this.name = name; }
  20.  
  21. 		@Override
  22. 	    public boolean equals(Object o) {
  23. 	    	if (o == null) return false;
  24. 	        if (o == this) return true;
  25. 	        if (!(o instanceof Test)) {
  26. 	            return (o instanceof String) && (name.equals(o));
  27. 	        }
  28. 	        Test t = (Test)o;
  29. 	        return name.equals(t.GetName());
  30. 	    }
  31.  
  32. 	    @Override
  33. 	    public int hashCode() {
  34. 	    	return name.hashCode();
  35. 	    }
  36.  
  37. 	    @Override
  38. 	    public String toString() {
  39. 	    	return name;
  40. 	    }
  41.  
  42. 	}
  43.  
  44. 	public static void main (String[] args) throws java.lang.Exception
  45. 	{
  46. 		String x = "a";
  47.  
  48. 		Test a = new Test(x);
  49. 		Test b = new Test(x);
  50. 		System.out.println(a.equals(b));
  51. 		System.out.println(a.equals(x));
  52.  
  53. 		List<Test> test = new ArrayList<Test>();
  54. 		test.add(a);
  55. 		test.add(b);
  56.  
  57. 		System.out.println(test.contains(new Test(x)));
  58.  
  59. 	}
  60. }
Success #stdin #stdout 0.1s 320512KB
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stdin
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Standard input is empty
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true
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https://ideone.com/sXC06t
language:
Java (12.0.1)
created:
8 years ago
visibility:
secret

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