InterviewSolution
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InterviewSolution
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What Is The Output Of This Program? 1. Import Java.util.*; 2. Class Arraylist { 3. Public Static Void Main(string Args[]) { 4. Arraylist Obj = New Arraylist(); 5. Obj.add("a"); 6. Obj.add("b"); 7. Obj.add("c"); 8. Obj.add(1, "d"); 9. System.out.println(obj); 10. } 11. } |
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Answer» obj is an object of class ArrayList hence it is an DYNAMIC array which can increase and DECREASE its size. obj.add(“X”) adds to the array element X and obj.add(1,”X”) adds element x at index position 1 in the list, Hence obj.add(1,”D”) stores D at index position 1 of obj and shifts the previous value STORED at that position by 1. Output: $ javac Arraylist.java obj is an object of class ArrayList hence it is an dynamic array which can increase and decrease its size. obj.add(“X”) adds to the array element X and obj.add(1,”X”) adds element x at index position 1 in the list, Hence obj.add(1,”D”) stores D at index position 1 of obj and shifts the previous value stored at that position by 1. Output: $ javac Arraylist.java |
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