1
Java, .
(, Task1, Task2 ).
.
1 (0,2 )
javac .
java Java (JVM).
2 (0,5 )
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[] s.
println() PrintStream. out System, System.
.
, main() , .. MyFirstClass . , .
, .
3 (0,8 )
main() :
--- MyFirstClass.main --------------------------------------------
for (int i = 0; i < s.length; i++)
System.out.println(s[i]);
------------------------------------------------------------------
, . , : java MyFirstClass arg1 arg2 arg3 arg4 arg5.
4 (1,5 )
MyFirstProgram.java MyFirstClass MySecondClass, :
|
|
|
int;
;
, ;
int, (, ..).
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 (1 )
- . MySecondClass MyFirstPackage.java, myfirstpackage, . MyFirstProgram.java.
MyFirstProgram.java :
--- MyFirstProgram.java ------------------------------------------
import myfirstpackage.*;
------------------------------------------------------------------
MyFirstProgram.java. , , .
6 (1 )
jar, , .
, , class, 5.
manifest.mf, :
--- manifest.mf --------------------------------------------------
Manifest-Version: 1.0
Created-By: < >
Main-Class: MyFirstClass
------------------------------------------------------------------
, .
myfirst.jar, -. (, MyJar) .
