The answers in this Section should consist of the Programs in either BlueJ. Environment or any program environment with Java as the base. Each program should be written using Variable descriptions/Mnemonic Codes such that the logic of the program is clearly depicted. Flow-Charts and Algorithms are not required. An iso 9001-2015 certified & msme registered computer training & coaching institute.

• Isc Java Programs With Algorithms
• Isc Computer Practical 2017

In this release:. Fixed an issue with an extra space appearing in the terminal before the first output. Fixed not being able to alter the preferences for the Submitter extension.A full list of fixes and improvements is available.Note: Subversion support is now deprecated and scheduled for removal.

Isc Java Programs With Algorithms

Users are encouraged to migrate to using Git instead.Note: The extensions API is planned to change soon, so extension writers will need to make changes. Further details will be available in the coming months. For 64-bit Windows 7 or newer, includes JDK (230 MB)for 64-bit Windows 7 or newer, includes JDK (230 MB)for MacOS X 10.11+, includes JDK (230 MB)for Debian, Ubuntu 18.10+ and other Debian-based systems (20 MB)all other systems executable jar file (20 MB)Source code for BlueJ (20 MB). In this release:.

Fixed a startup freeze that could cause BlueJ to be forever stuck on the splash screen in Windows. Fixed a window positioning issue that could cause BlueJ windows to appear off-screen (and thus seem to never appear), especially on Windows. Stopped the 'File changed on disk' dialog from popping up again when dismissed, and made it less likely to appear in cases which might be caused by slow network storage.

Fixed an issue with not recognising JavaFX installed via Ubuntu package.A full list of fixes and improvements is available.Note: Subversion support is now deprecated. Users are encouraged to migrate to using Git instead. For 64-bit Windows 7 or newer, includes JDK (192 MB)for 64-bit Windows 7 or newer, includes JDK (192 MB)for MacOS X 10.11+, includes JDK (194 MB)for Debian, Ubuntu 18.10+ and other Debian-based systems (18 MB)all other systems executable jar file (19 MB)Source code for BlueJ (20 MB). In this release:. Moved to Java 11.

This means that BlueJ now requires a 64-bit operating system. Added support for the new var keyword in Java 10. Fix JUnit BeforeClass/AfterClass functionality.

Fix various small editor bugs.A full list of fixes and improvements is available.Note: Subversion support is now deprecated. Users are encouraged to migrate tousing Git instead. For 64-bit Windows 7 or newer, includes JDK (192 MB)for 64-bit Windows 7 or newer, includes JDK (192 MB)for MacOS X 10.11+, includes JDK (194 MB)for Debian, Ubuntu 18.10+ and other Debian-based systems (18 MB)all other systems executable jar file (19 MB)Source code for BlueJ (20 MB). In this release:.

Fixed memory leak in Java editor.A full list of fixes and improvements is available.Note: This is likely to be the last release with support for Subversion. Users are encouraged to migrate tousing Git instead.Note: See Version 4.0.0 notes for supported devices, minimum requirements and major changes since Version 3.1.7 for Windows 7 or newer, includes JDK (192 MB)for Windows 7 or newer, includes JDK (192 MB)for MacOS X 10.10+, includes JDK (194 MB)for Debian, Ubuntu and other Debian-based systems (18 MB)all other systems executable jar file (19 MB)Source code for BlueJ (20 MB). In this release:. Fixed various issues with Git support. Many other minor fixes.A full list of fixes and improvements is available.Note: See Version 4.0.0 notes for supported devices, minimum requirements and major changes since Version 3.1.7 for Windows 7 or newer, includes JDK (192 MB)for Windows 7 or newer, includes JDK (192 MB)for MacOS X 10.10+, includes JDK (194 MB)for Debian, Ubuntu and other Debian-based systems (18 MB)all other systems executable jar file (19 MB)Source code for BlueJ (20 MB). Major fixes:.

Fixed: Occasional exceptions/bugs during Java file editing. Fixed: Many printing problems. Fixed: Class documentation view shows blank on first view.A full list of fixes and improvements is available.Note: See Version 4.0.0 notes for supported devices, minimum requirements and major changes since Version 3.1.7 for Windows 7 or newer, includes JDK (190 MB)for Windows 7 or newer, includes JDK (190 MB)for MacOS X 10.10+, includes JDK (190 MB)for Debian, Ubuntu and other Debian-based systems (20 MB)all other systems executable jar file (20 MB)Source code for BlueJ (20 MB). Major fixes:. Fixed: Graphical display bug could cause the Java editor and other windows (e.g. This is a major new release of BlueJ. For Java programming, it adds tabbed editors, automatic error-checking, adds display of multiple errors and has most of the BlueJ interface rewritten into JavaFX (solving many HiDPI issues on Windows) while also providing some support for writing JavaFX applications and including JavaFX CSS files in a project.BlueJ 4 also adds support for Stride, our frame-based programming language.

Projects can be pure-Java (as in BlueJ 3 and earlier), pure Stride or a mix of Java and Stride. Support is providing for converting between Java and Stride.BlueJ 4 adds support for the Git version control system (and retains support for Subversion).Note: BlueJ 4 requires Java 8 (minimum 8u60) and JavaFX, and thus is currently unsupported on older Macs and onRaspberry Pi. Support for CVS, JavaME projects, and applet development has been removed. Some extensions may no longer work in BlueJ 4. For Windows 7 or newer, includes JDK (190 MB)for Windows 7 or newer, includes JDK (190 MB)for MacOS X 10.10+, includes JDK (190 MB)for Debian, Ubuntu and other Debian-based systems (20 MB)all other systems executable jar file (20 MB)Source code for BlueJ (20 MB). This is a bug-fix release for users who still need to use Java 6.

In the absence of any major issues, it will be the last version of BlueJ which will work with Java 6.List of fixes and improvements:. Fixed problems in handling SVN projects.

Fixed minor issues with the debugger.Note that from this version, to work around bugs in the SVNKit library that BlueJ uses for Subversion support, BlueJ projects whichare shared to or checked out from a repository will use the (old) version 1.6 working copy format. This may mean that some externaltools (including recent versions of the subversion command line client) may not be able usable with BlueJ projects. Projects checkedout or shared using BlueJ version 3.1.6 used the version 1.7 working copy format and will not work properly (in any version of BlueJ)due to SVNKit bugs; BlueJ version 3.1.7 will issue a warning when opening such a project. For Windows 2000, XP, Vista or newer, includes JDK (182 MB)for Windows 2000, XP, Vista or newer (11 MB)for Windows 2000, XP, Vista or newer, to run from USB stick (184 MB)for MacOS X 10.7.3+ (180 MB; includes JDK 8)for MacOS X 10.7.2 or earlier (9.8 MB; requires JDK 6)for Debian, Ubuntu and other Debian-based systems (9.3 MB)all other systems (executable jar file) 9.8 MB)Source for BlueJ version 3.1.6 (13 MB).

Minor bug fixes since last release. Additions to the extensions API, allowing extensions to handling drawing the package graph. Stack traces from exceptions (shown in the terminal window) are now coloured and clickable. Resolves more firewall startup issues. More flexibility in bluej.userHome setting (possible to specify multiple locations).Bug fixes:. Fixed: Parsing bugwith parenthesized identifiers. Fixed: Parsing bug with multiple initializers in 'for' loop.

Fixed: Encoding issues with output to System.err. Fixed: Problems with compilation of some files.

Fixed: 'Maybe you meant.' Misfires when there is more than one method call on a line. Fixed: Update JDK search path (Ubuntu/Debian)for Windows 2000, XP, Vista or newer (6.9 Mb)for MacOS X (5.8 Mb)for Debian, Ubuntu and other Debian-based systems (5.6 Mb)all other systems (executable jar file) 5.8 Mb)Source for BlueJ version 3.0.8 (8.1 MB). Resolves firewall/network-adapter startup issues, especially onMax OS X 10.7 (Lion). Fixes a problem with inspecting arrays of twodimensions or more (and a similar problem with local multidimensional arraysin the debugger).Fixes problem with non-ASCII characters ininteractive method calls.

Also fixes several other bugs.Bug fixes:. Fixed: Class icons overlap when project is checked out withoutproject files. Fixed: Parser problems (bad highlighting and/or editor lockup) caused by annotations. Fixed: Varargs parameters not treated as arrays by codecompletion/error message enhancer.

Fixed: Search highlights wrong if file modified in externaleditorfor Windows 2000, XP, Vista or newer (6.8 Mb)for MacOS X (5.7Mb)for Debian, Ubuntu and other Debian-based systems (5.6 Mb)all other systems (executablejar file) 5.7 Mb)Source for BlueJ version 3.0.7 (8.0 MB). Resolves issue with display of class documentation in the editor when running BlueJ with Java 7. Introduces an.msi package for installation on Windows. Includes support for Java 7 language features. JUnit 4 replaces JUnit 3 for test support (with thanks to Patrick Doran-Wu at the University of Western Australia).

Default character set for new projects changed to UTF-8 (better support for non-English characters). Improved method call recording in the terminal.Bug fixes:. Fixed: Compile error could cause compiler to hang. Fixed: One line comments should not affect scope colour. Fixed: Various small scope highlighting issues.

Fixed: Various minor problems in the code pad. And many more minor bug fixes.for Windows 2000, XP, Vista or newer (6.0 Mb)for MacOS X (5.4Mb)for Debian, Ubuntu and other Debian-based systems (5.2 Mb)all other systems (executablejar file) 5.4 Mb)Source for BlueJ version 3.0.5 (7.3 MB). Includes a Slovak translation, and enables assertions by default. Bug fixes:. Fixed: Class templates for some languages (eg. Apart from the changes listed below, this version includes functionality to send some anonymous information (BlueJ version, Java version, Operating System, interface language etc) to the BlueJ maintainers, to help with development planning.

Summary of most important changes:. Added support for developing J2ME applications. Team work functionality now works with Subversion (SVN), as well as CVS.

JUnit test recording significantly improved (records more interactions). Improved window handling. Installer improvements. Numerous bug fixes.BlueJ now requires Java 5 or newer.

Older Java versions are no longer supported.for Windows 2000, XP, Vista or newer (5.1Mb)for MacOS X (4.7Mb)all other systems (executablejar file) (4.8 Mb)Source for BlueJ version 2.5.0 (25.5 MB). Summary of most important changes:. #733 - hash in project path causes problems ('Main method doesnot appear in context menu'). #781 - keyword 'new' highlighting. #791 - inspection of generic field containing object of non-immediately-derivedtype. #793/#795 - java 1.5.0 compile-time errors not verbose enough.

#800- exception thrown in code pad causes internal BlueJ error. #838 - Japanesedialogs in wrong encoding. #847 - auto project open at startup is notrobust. #848 - BlueJ main window now received focus at startup (MacOS).

#786 - Terminal bug clearing error output. Summary of most important changes:.- debugger now displays static variables in a separate list. debuggerdisplays variables when stopped in static method. projectscan include project-specific libraries. Frames/JFramesautomatically removed when objects are removed. helpmenu items can be added by users. terminalfont size user definable.

javadoccan be configured to include private methods. automaticcreation of crash recovery files; optional creation of backup files(thanks to David R. Musicant (dmusican@mathcs.carleton.edu) for implementingthese features). properfind/replace implemented in editor.

optionalline number display in editor. addedblock indent function to editor. methodtemplate for 'insert-method' template user definable. japaneselocalisation added (interface, etc. In japanese); thanks to. useCommand key instead of CTRL as menu shortcut on MacOS. bugfix on MacOS: Show Terminal/Debugger could crash system.

extendedlatin characters (umlaut, accented characters, etc) handled correctlyby parser. requires JDK 1.3 or newer. uses new (JDK1.3) compiler implementation. can get arrays and array element to the object bench. local variables of static methods now shown (bug fix). new class templates can be added.

class templates can be located in arbitrary directory. 'user home' can be specified. display of exceptions in library classes improved. bug fixes with editor key definitions. new editor functions for cutting/copying/moving lines and words.

Isc Computer Practical 2017

optional soft TABs (tabbing with spaces) in the editor. various bug fixes. UML-style notation for the class diagram. support for named and nested packages. improved import of non-BlueJ packages. terminal text can be saved or copied.

editor key bindings can be changed (jdk 1.3 only). editor font can be changed. 'export' function to create standard Java packages and executablejar files. projects have project comments (README note). javadoc support added for single classes and whole projects. cascading menus for large menus. the debugger can now be used with swing applications.

classes can be renamed in the class source. printing class sources has been fixed/improved.

editor views have been improved. bug fixed: end of long lines was not displyed properly. bug fix: System.exit did not work correctly. new editor functions: 'indent', 'break-and-indent', 'comment', 'uncomment'.

editor key bindings can be changed (but are not yet saved - they arelost on exit). a default source directory can be defined in the 'bluej.defs' file.This serves as a starting point for the file chooser. install support for jdk 1.3 added.

installation support for Linux jdk 1.2.2 added. added preferences dialogue. editor font size can be changed. non-BlueJ packages can now be opened in BlueJ (with automatic dependencyanalysis).

So far, only packages without nested packages are supported. 'package.' Line automatically fixed when importing classes. System.exit now works for graphical applications. bug fixed in inspection of large arrays. default parameter 'null' added for static void main calls. support for internationalisation (so far, German is the only languagefile supplied besides English).

Implementation changed to run on Java 2 platform. Debugger implemented. Includes breakpoints, single stepping, variableinspection. Execution implementation changed to use JDI - promises significantimprovements in stability and reliability. Applets supported (development and viewing in applet viewer and browser). Dependency analysis fixed - works correctly now. Many editor improvements.

Help button for compiler error messages and exceptions. Array inspection implemented. Exception handling (reporting) improved. handling of exceptions: exceptions in user programs are caught anddisplayed properly. System.exit can now be used normally. bug fix: empty string as method result now returned properly. bug fix: user defined object as method result now shown correctly.

bug fixes: names of objects on bench: now ensures that names are uniqueand valid. bug fix: layout of object bench after 'get' and 'remove' fixed.

bug fix: objects could not be used properly after put on the objectbench through the 'Get' operation in the inspect window. This worksnow.

(a) Binary encodings for integers and real numbers using a finite number of bits (signmagnitude, twos complement, mantissaexponent notation). Basic operations on integers and floating point numbers. Limitations of finite representations. Signed, unsigned numbers, least and most significant bits.

Sign-magnitude representation and its shortcomings (two representations for 0, addition requires extra step); twos-complement representation. Operations (arithmetic, logical, shift), discuss the basic algorithms used for the arithmetic operations. Floating point representation. Block diagram of a computer system with details of (i) function of each block and (ii) interconnectivity and data and control flow between the various blocks Show how the logic in (a) above can be realized in hardware in the form of gates.

These gates can then be combined to implement the basic operations for arithmetic. Tie up with the arithmetic operations on integers discussed earlier in 2 (a). Develop the diagram by successive refinement of blocks till all the following have been covered: ALU, RAM, cache, the buses (modern computers have multiple buses), disk (disk controller and what it does), input/output ports (serial, parallel, USB, network, modem, line-in, line-out etc.), devices that can be attached to these ports (e.g keyboard, mouse, monitor, CDROM, DVD, audio input/output devices, printer, etc.).

Clearly describe the connectivity and the flow of data and control signals. Memory organization and access; parity; memory hierarchy - cache, primary memory, secondary memory.

Describe the semantics of the conditional and looping statements in detail. Evaluation of the condition in conditional statements (esp. Difference between and and && and &). Emphasize fall through in switch statement. Many small examples should be done to illustrate control structures. Printing different kinds of patterns for looping is instructive.

When number of iterations are known in advance use the for loop otherwise the while-do or do-while loop. Express one loop construct using the others. The Scanner class can be used for input of various types of data (e.g. Int, float, char etc.) from the standard input stream or a file input stream.

The File class is used model file objects in the underlying system in an OS independent manner. Similarly, the Printer class handles output. Only basic input and output using these classes should be covered. Discuss the concept of a token (a delimited continuous stream of characters that is meaningful in the application program – e.g. Words in a sentence where the delimiter is the blank character). This naturally leads to the. (e) Concept of recursion, simple recursive functions (e.g.

Factorial, GCD, binary search, conversion of representations of numbers between different bases). Many problems can be solved very elegantly by observing that the solution can be composed of solutions to ‘smaller’ versions of the same problem with the base version having a known simple solution.

Recursion can be initially motivated by using recursive equations to define certain functions. These definitions are fairly obvious and are easy to understand. The definitions can be directly converted to a program. Emphasize that any recursion must have a base case.

Otherwise, the computation can go into an infinite loop. Illustrate this by removing the base case and running the program. (iii) This is done by trying to approximate the number of operations done by each algorithm as a function of the size of the input. In most programs the loops are important in deciding the complexity. For example in bubble sort there are two nested loops and in the worst case the time taken will be proportional to n(n-1) where n is the number of elements to be sorted.

Similarly, in linear search in the worst case the target has to be compared with all the elements so time taken will be proportional to n where n is the number of elements in the search set. The program handed in at the end of the Planning session shall be returned to the candidates. The candidates will be required to key-in and execute the Java program on seen and unseen inputs individually on the Computer and show execution to the examiner.

A printout of the program listing, including output results should be attached to the answer script containing the algorithm and handwritten program. This should be returned to the examiner. The program should be sufficiently documented so that the algorithm, representation and development process is clear from reading the program. Large differences between the planned program and the printout will result in loss of marks. (a) Propositional logic, well formed formulae, truth values and interpretation of well formed formulae (wff), truth tables, satisfiable, unsatisfiable and valid formulae. Equivalence laws and their use in simplifying wffs. Propositional variables; the common logical connectives ( (not), ∧ (and), ∨ (or), ⇒ (implication), ⇔ (biconditional); definition of a well-formed formula (wff); representation of simple word problems as wff (this can be used for motivation); the values true and false; interpretation of a wff; truth tables; satisfiable, unsatisfiable and valid formulae.

Typically return values, they may also cause sideeffects (e.g. Change attribute values of objects) – typically functions that are only supposed to cause side-effects return void (e.g. Set functions). Java passes argument by value. Illustrate the difference between primitive values and object values as arguments (changes made inside functions persist after the call for object values). Static definitions as class variables and class functions visible and shared by all instances.

Need for static functions and variables. Introduce the main method – needed to begin execution. Many problems can be solved very elegantly by observing that the solution can be composed of solutions to ‘smaller’ versions of the same problem with the base version having a known simple solution. Recursion can be initially motivated by using recursive equations to define certain functions. These definitions are fairly obvious and are easy to understand. The definitions can be directly converted to a program.

Emphasize that any recursion must have a base case. Otherwise, the computation can go into an infinite loop. (b) Recursive data structures: single linked list (Algorithm and programming), binary trees, tree traversals (Conceptual) Data structures should be defined as abstract data types with a well defined interface (it is instructive to define them using the Java interface construct) – see the comments in (a) above. Emphasize that algorithms for recursive data structures are themselves recursive and that algorithms are usually the simplest and most elegant. The following should be covered for each data structure.

(iii) This is done by trying to approximate the number of operations done by each algorithm as a function of the size of the input. In most programs the loops are important in deciding the complexity. For example in bubble sort there are two nested loops and in the worst case the time taken will be proportional to n(n-1) where n is the number of elements to be sorted. Similarly, in linear search in the worst case the target has to be compared with all the elements so time taken will be proportional to n where n is the number of elements in the search set. (iv) In most algorithms the actual complexity for a particular input can vary. For example in search the number of comparisons can vary from 1 to n. This means we need to study the best, worst and average cases.

Comparisons are usually made taking the worst case. Average cases are harder to estimate since it depends on how the data is distributed. For example in search, if the elements are uniformly distributed it will take on the average n/2 comparisons when the average is taken over a statistically significant number of instances. The program handed in at the end of the Planning session shall be returned to the candidates. The candidates will be required to key-in and execute the Java program on seen and unseen inputs individually on the Computer and show execution to the Visiting Examiner. A printout of the program listing including output results should be attached to the answer script containing the algorithm and handwritten program. This should be returned to the examiner.

The program should be sufficiently documented so that the algorithm, representation and development process is clear from reading the program. Large differences between the planned program and the printout will result in loss of marks. Teachers should maintain a record of all the assignments done as part of the practical work through the year and give it due credit at the time of cumulative evaluation at the end of the year. Students are expected to do a minimum of twenty assignments for the year.

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