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- Java



2011


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«- » 010400.62 « ».


1

Java, . (, Task1, Task2 ).

1
javac . java Java (JVM).

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MyFirstProgram.java, MyFirstClass: --- MyFirstProgram.java --------------------------------class MyFirstClass { } -------------------------------------------------------- javac. "javac MyFirstProgram.java". "java < >". , , JVM ­ . , , ,


. ".java" ( ). . main(): --- MyFirstProgram.java --------------------------------class MyFirstClass { void main(String[] s) { System.out.println("Hello world!!!"); } } -------------------------------------------------------- main() String[]
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println() PrintStream. out System, System. . . , main() , .. MyFirstClass . , , . , , .

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main() :


--- MyFirstClass.main ----------------------------------for (int i = 0; i < s.length; i++) System.out.println(s[i]); -------------------------------------------------------- , . , : "java MyFirstClass arg1 arg2
arg3 arg4 arg5". .

4

MyFirstProgram.java







MyFirstClass





MySecondClass,

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MyFirstClass.main() ( , ): --- MyFirstClass.main ----------------------------------< "o" MySecondClass>; int i, j; for (i = 1; i <= 8; i++) { for(j = 1; j <= 8; j++) { o.< >(i); o.< >(j); System.out.print(o.<, >()); System.out.print(" "); } System.out.println(); } -------------------------------------------------------- . .


5
MySecondClass
MyFirstPackage.java,











myfirstpackage,

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MyFirstProgram.java.

MyFirstProgram.java : --- MyFirstProgram.java --------------------------------import myfirstpackage.*; -------------------------------------------------------- MyFirstProgram.java. , , . , , .

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jar, , . , , class, 5. manifest.mf, : --- manifest.mf ----------------------------------------Manifest-Version: 1.0 Created-By: < > Main-Class: MyFirstClass -------------------------------------------------------- , .


myfirst.jar, -. (, MyJar) . , .


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Java, .


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Java .

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vectors.

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VectorIndexOutOfBoundsException IncompatibleVectorSizesException.










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Vector , , . , .

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public static void outputVector(Vector v, OutputStream out),

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public static void writeVector(Vector v, Writer out),


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public static Vector readVector(Reader in).

















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createInstance(int size),

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boolean equals(Object
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clone().


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Vector synchronizedVector(Vector vector),

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Java5.

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