Java Puzzle

Nov 14, 200749 likes5,578 views

This document presents 8 Java puzzles to demonstrate common programming pitfalls. The puzzles cover issues like static methods overriding instead of overloading, violating the equals and hashCode contracts for objects, abrupt returns in finally blocks, integer overflows when subtracting large numbers, operator overloading with characters, ambiguous constructor overloading, implicit type promotions between primitives, and comparing values of different types. For each puzzle, it provides the expected output and an explanation of what is happening, along with suggestions for how to fix the problem code. The overall goals are to have fun while learning about quirks in Java programming and how to avoid common mistakes.

The document contains code snippets for various Java programs that perform tasks like calculating the area of a circle, finding the factorial of a number, displaying prime numbers, sorting an array, counting characters in a string, reversing a string, creating and running threads, handling exceptions, and creating a simple applet with buttons to change the background color. The code examples demonstrate basic Java programming concepts like classes, methods, loops, arrays, exceptions, threads, applets, and event handling.

Java practicalshweta-sharma99

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The document contains 17 Java code snippets that provide solutions to common programming problems and examples. Some of the problems addressed include: reversing an integer, checking if two words are anagrams, palindrome checking, merging two sorted arrays, left rotation of an array, sorting an array of 0s, 1s and 2s, counting character occurrences in a string, factorial, Fibonacci series, prime number checking, bubble sort, and substring searching. The code snippets provide full programs or methods to solve each problem in 1-5 steps or lines of code each.

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The document outlines a Java programming practical course covering various Java concepts and programs. It includes 40 practical programs to be completed ranging from basic programs to find area of a circle, factorial of a number to more advanced programs involving OOP concepts like inheritance, abstraction, exception handling and multithreading. It also provides the evaluation and marking scheme for the practical exam.

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This document provides an introduction to the Julia programming language. It discusses key features of Julia including its performance similar to C with the readability of Python. Examples show Julia's dynamic type system, array and loop syntax, functions, and support for mathematical operations, conditionals, and Unicode symbols. Special features highlighted are easy parallelization, packaging, and its type system including multiple dispatch and traits.

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This document provides an introduction to the Julia programming language. It discusses key features of Julia such as writing code that is readable like Python but runs as fast as C. Examples are given showing Julia's dynamic typing, numeric types, operators, control flow statements like if/else and while loops, and arrays. The document ends with a rock-paper-scissors game example that demonstrates functions, conditionals, and refactoring code for simplicity.

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Java puzzle-1195101951317606-3rsmuralirs

This document provides a series of Java puzzles to help learn some quirks of programming in Java. It includes 8 puzzles with sample code snippets and questions about the expected output. The puzzles cover topics like static methods, overriding equals and hashCode, finally blocks, integer overflow, type promotion, and decimal representation. Each puzzle is accompanied by an explanation of what it illustrates and sometimes suggestions for how to fix any issues in the code. The overall goals are to help avoid common pitfalls and have fun while learning.

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The document discusses various programming concepts in C# such as data types, control flow statements like if/else, switch, loops (for, while, do-while), methods for generating random numbers, and examples of programming problems involving calculations, patterns, and simulating dice rolls. Random numbers can be generated using the Random class, control structures conditionally execute blocks of code, and loops iterate code for a set number of repetitions.

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