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COMPUTER APPLICATION NOTES BY-DEV KARIA (Autosaved)

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Dev d karia
Gundecha Education Academy, Mumbai
XI COMERCE
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COMPUTER APPLICATION NOTES BY -DEV KARIA NAME CLASS METHOD JVM/INTERPETE R UNICODE DATA TYPES FINAL OPERATOR EXPRESSTION D ATA WRAPPER CLASS FUNCTION LIBRARY RUNTIME ERROR COMPILE TIME ERROR EXCEPTION ENCAPSULATI ON Constructor ARRAYS Garbage collection Ascii code DEFINATION OR MEANING A CLASS CAN BE TERMED AS A GROPU OF OBJECTS THAT SHARE COMMON PROPERTIES A FUNCTION THAT REPRESENTS THE BEHAVIOUR OF THE OBJECT WHICH INTERPRETS BYTE CODE FOA A PARTICULAR PLATFORM TO RUN A PROGRAM UNICODE IS A 2BYTE CHARACTER CODE SET USED FOR INTERNAL REPRESENTATION OF CHAR AND STRING TO IDENTIFY THE TYPE OF DATA INVOLVED IN AN OPREATION IS KNOWN AS DATA TYPE THE FINAL KEYWORD CONVERTS THE VARIABLE INTO CONSTANT WHOSE VALUE CANNOT BE CHANGED AHEAD AN OPERATOR IS A SPECIAL SYSMBOL THAT IS USED TO PERFORM VARIOUS MATHMETICAL FUNCTIONS AN EXPRESSION IS A VALID COMBINATION OF CONSTANTS AND OPERATORS THE VARIABLES GIVEN WITHIN THE CLASS ON WHICH SOME OPERATIONS ARE PERFORMED THE CLASS HELPS IN CONVERTING PRIMITIVE DATA TYPE TO OBJECT TYPE A FUNCTION IS A COMPOUND SET OF EXECUTABLE STATMENS TO CARRY OUT A DPECIFIC TASK IT IS A COLLECTION OF PRE-DEFINED FUNCTION WHIH HAS SOME MEANINGFULL INSTRUCTION TO COMPILER WHICH HELPS IN EXECUTING THE FUNCTION THE ERROR THAT APPEARS DUE TO SOME LOGICAL PROBLEMS IN THE PROGRAM OTHER THAN COMPILE ERROR ALL THE SYSNTAX ERROR DETECTED AND DISPLAYED BY THE JAVA COMPILER AS SOON AS THE PROGRAM IS COMPILED AN UNEXPECTED SITUATION WHICH ARISES AS AN RUN TIME ERROR IN THE PROGRAM THE ACT OF COMBINIG DATA AND ITS ASSOCIATED FUNCTION IN FORM OF A SINGLE UNIT A SPECIAL FUNCTION WHICH IS CREATED ON THE NAME OF THE CLASS Such as parametrized and non paramatrised copy cons Package IT IS COLLECTION OF ELEMENTS WITH SIMILAR DATA TYPE When an object is no longer referred to by any variable, java automatically reclaims memory used by that object. A-Z a-z 0-9 (int) 65 91 97-122 48-57 Group of logically related class together is known as pakage ex- io package, util package Exception handling To run the program successfully one should try to catch the exception object thrown by the interpreter and to take the appropriate action to remove the error Io exception Appears due to some input/output problem occurs such as reading and writing

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