Java Basics
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Transcript of Java Basics
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JAVA
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Features Of OopsEncapsulation(data Hiding)AbstractionInheritancePolymorphism
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CLASS
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Compiled and interpreted Platform independent Object oriented Robust and secure Distributed Multi threadedFeatures Of Java
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Ibm compatible 486 or above 8 mb or ram Any operating system
Hardware Requirement
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Java Environment
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javac java appletviewer javadoc javap javahComponents of JDK
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InterpreterExecution of a Java ProgramCompiler
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Components Of Java Virtual MachineInterpreter for any o/sJIT compiler for any browser
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Built- In Datatypes
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TYPE SIZE(bits) MIN VALUE MAX VALUEbyte 8 -128 127short 16-32768 32767int 32-2147483648 2147483647long 64-9.22 *10e18 9.22 *10e18float 32 -3.402*10e38 3.402*10e38double 64 -1.79*10e308 1.79*10e308StringBuilt-in Datatypes Numeric Datatype
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Java does not support PointersJava does not support Operator OverloadingJava does not support Multiple InheritanceJava does not support Global VariablesNo DestructorsJava does not support Header FilesDifference Between Java and C++