Answered: Which element is stored at index 1…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Which element is stored at index 1 after the following sequence?

ArrayList<String>groceryList;groceryList=newArrayList<String>();groceryList.add("Bread");groceryList.add("Apples");groceryList.add("Grape Jelly");groceryList.add(1,"Peanut Butter");groceryList.set(1,"Frozen Pizza");groceryList.remove(1);

	Bread
	Peanut Butter
	Apples
	Frozen Pizza

For the given code, when is numType.setText() called?

publicclassOddEvenextendsJFrameimplementsChangeListener{privateJSpinnernumSpinner;privateJTextFieldnumType;...numSpinner.addChangeListener(this);...@OverridepublicvoidstateChanged(ChangeEventevent){IntegernumValue;numValue=(Integer)numSpinner.getValue();if(numValue%2==0){numType.setText("Even");}else{numType.setText("Odd");}}...}

	Every time numSpinner's value changes
	Only the first time numSpinner's value changes
	Every time numSpinner's value or numType's value changes
	Only the first time numSpinner's value or numType's value changes

Which of the following relationships depicts an is-a relationship?

	Building - School
	School - Classroom
	Classroom - Student
	Student - Building

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