Arraylist methods - Study guides, Class notes & Summaries

QuestionText QuestionType Choice1 Choice2 Choice3 Choice4 Choice5 Grade1 Grade2 Grade3 Grade4 Grade5 "What will be the result of compiling the following program? public class MyClass { long var; public void MyClass(long param) { var = param; } // (Line no 1) public static void main(String[] args) { MyClass a, b; a = new MyClass(); // (Line no 2) } }" MCQ A compilation error will occur at (Line no 1), since constructors cannot specify a return value A compilation error will occur at (2...

/ * THREADS-0 */ 1Q.What will be the output of the program? class MyThread extends Thread { public static void main(String [] args) { MyThread t = new MyThread(); (); S("one. "); (); S("two. ");} public void run() { S("Thread "); }} ans : an exception occurs at runtime. 2Q.Which of the following statements can be used to create a new Thread? (Choose TWO) Implement .Thread and implement the start() method. Extend .Thread and override the run() method. ** Implement .Runnabl...

An instance of a user-defined type that includes attributes (instance variables) and related ______ that work with these variables. - correct answer Object A(n) _____________ is a special method that will be automatically called upon the creation of an object. - correct answer constructor The accessibility of set and get methods of a class must be set to _____________. - correct answer public An object reference is a variable that stores - correct answer location of ...

The structure of a Java document typically includes: Package Declaration: The optional package declaration, which specifies the package to which the file belongs. java Copy code package ; Import Statements: Optional import statements that import classes or entire packages to be used in the file. java Copy code import .ArrayList; import .List; Class Declaration: The declaration of a class, which is the basic building block of Java programs. java Copy code public class MyClass...

AQA A-LEVEL COMPUTER SCIENCE PAPER 1 MARK SCHEME LATEST VERSION A-level COMPUTER SCIENCE 7517/1 Paper 1 Mark scheme June 2020 Version: 1.0 Final *206A7517/1/MS* Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associ...

The content delves into important Java fundamentals, including the usage of ArrayList for resizable arrays, abstract classes with abstract methods, and interfaces to group-related methods. It covers syntax for declaring, implementing, and extending interfaces, as well as enum types for defining fixed sets of constants. The guide also touches on exceptions, the final, static, and abstract keywords, and the differences between local, instance, and class variables. It serves as a concise and valuab...

AQA A-LEVEL COMPUTER SCIENCE PAPER 1 MARK SCHEME LATEST VERSION A-level COMPUTER SCIENCE 7517/1 Paper 1 Mark scheme June 2020 Version: 1.0 Final *206A7517/1/MS* Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associ...

AQA A-LEVEL COMPUTER SCIENCE PAPER 1 MARK SCHEME LATEST VERSION A-level COMPUTER SCIENCE 7517/1 Paper 1 Mark scheme Version: 1.0 Final *206A7517/1/MS* Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates part...

This is a summary document to facilitate students to understand java programming language without signing up for a lot of pages. It contain exercises and examples for each sub-course.