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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.  
  9. class GenericClass<T,U>
  10. {
  11. 	public T id;
  12. 	public U name;
  13. 	GenericClass(T id, U name)
  14. 	{
  15. 		this.id = id;
  16. 		this.name = name;
  17. 	}
  18.  
  19. 	public static <E>
  20. 	E add(E n1, E n2)
  21. 	{
  22.  
  23. 		System.out.println(n1);
  24. 		return n2;
  25. 	}
  26. }
  27.  
  28. class Ideone
  29. {
  30. 	public static void mergesort(int arr[])
  31. 	{
  32. 		int size = arr.length;
  33. 		if(size <2)
  34. 		return;
  35.  
  36. 		int middle = size/2;
  37. 		int index =0;
  38.  
  39. 		int left[] = new int[middle];
  40. 		for(index =0;index<middle;index++)
  41. 		left[index] = arr[index];
  42.  
  43. 		int right[] = new int[size- middle];
  44. 		for(int i=0;index<size;i++,index++)
  45. 		right[i]=arr[index];
  46.  
  47. 		mergesort(left);
  48. 		mergesort(right);
  49. 		merge_arrays(left,right,arr);
  50. 	}
  51.  
  52. 	public static void merge_arrays(int[] left, int right[], int arr[])
  53. 	{
  54. 		int l=0,r=0,index=0;
  55.  
  56. 		while(l<left.length && r<right.length)
  57. 		{
  58. 			if(left[l] < right[r])
  59. 			{
  60. 				arr[index]= left[l];
  61. 				index++;
  62. 				l++;
  63. 			}
  64. 			else
  65. 			{
  66. 				arr[index]= right[r];
  67. 				index++;
  68. 				r++;
  69. 			}
  70. 		}
  71.  
  72. 		while(l<left.length)
  73. 		{
  74. 			arr[index++]=left[l++];
  75. 		}
  76. 		while(r<right.length)
  77. 		{
  78. 			arr[index++]= right[r++];
  79. 		}
  80.  
  81. 	}
  82.  
  83. 	public static void bubblesort(int[] arr)
  84. 	{
  85. 		boolean flag= true;
  86.  
  87. 		while(flag)
  88. 		{
  89. 			flag = false;
  90. 			for(int j=0;j<arr.length -1;j++)
  91. 			{
  92. 				if(arr[j+1]<arr[j])
  93. 				{
  94. 					int temp = arr[j+1];
  95. 					arr[j+1]=arr[j];
  96. 					arr[j]=temp;
  97. 					flag = true;
  98. 				}
  99. 			}
  100. 		}
  101. 	}
  102. 	class Check
  103. 	{
  104. 		public int data;
  105.  
  106. 	}
  107. 	public static void main (String[] args) throws java.lang.Exception
  108. 	{
  109. 		Check obj1 = new Check();
  110. 		obj1.data =1;
  111. 		Check obj2 = new Check();
  112. 		obj2 = obj1;
  113. 		obj2.data =3;
  114. 		System.out.print(obj1.data);
  115. 	/*	int arr[] = {3,2,4,5,1,7};
  116. 		bubblesort(arr);
  117. 		for(int i=0;i<arr.length;i++)
  118. 		System.out.print(arr[i]+" ");*/
  119. 		/*// your code goes here
  120. 		GenericClass<Integer,String> obj = new GenericClass<Integer,String>(2,"Atreya");
  121. 		System.out.println(obj.id+" "+obj.name);
  122.  
  123. 		GenericClass.add<Integer>(2.4,3);*/
  124. 	}
  125. }
Compilation error #stdin compilation error #stdout 0.07s 380160KB
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stdin
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Standard input is empty
compilation info 
Main.java:109: error: non-static variable this cannot be referenced from a static context
		Check obj1 = new Check();
		             ^
Main.java:111: error: non-static variable this cannot be referenced from a static context
		Check obj2 = new Check();
		             ^
2 errors
stdout
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Standard output is empty
https://ideone.com/NOhTV2
language:
Java (12.0.1)
created:
8 years ago
visibility:
public

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