Javaのクラスとメソッドとフィールドの説明とその使い方の解説

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Re:Kayo-System Co.,Ltd.
2012 2 21

2. Re:Kayo-System Co.,Ltd.
2012 2 21

3. Re:Kayo-System Co.,Ltd.
2012 2 21

4. package ykmjuku.sample.app;
public class HelloMain {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

5. Re:Kayo-System Co.,Ltd.
2012 2 21

6. Re:Kayo-System Co.,Ltd.
2012 2 21

7. package ykmjuku.sample.app;
public class HelloMain {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

8. Re:Kayo-System Co.,Ltd.
2012 2 21

9. Re:Kayo-System Co.,Ltd.
2012 2 21

10. package ykmjuku.sample.app; package ykmjuku.sample.app;
public class Hoge { public class HelloMain {
public static void main(String[] args) {
} Hoge hoge = new Hoge();
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

11. package ykmjuku.sample.app;
public class Hoge {
}
package ykmjuku.sample.app;
public class Hoge {
public Hoge(int n){
}
}
Hoge hoge = new Hoge();
Re:Kayo-System Co.,Ltd.
2012 2 21

12. Re:Kayo-System Co.,Ltd.
2012 2 21

13. package ykmjuku.sample.app;
public class Hoge {
class MyClass {
}
public class HelloMain {
} public static void main(String[] args) {
Hoge hoge = new Hoge();
Hoge.MyClass c = new Hoge.MyClass();
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

14. package ykmjuku.sample.app;
public class HelloMain {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

15. package ykmjuku.sample.app;
import ykmjuku.sample.app2.Fuga;
public class HelloMain {
public static void main(String[] args) {
Hoge hoge = new Hoge();
Fuga fuga = new Fuga();
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

16. package ykmjuku.sample.app;
public class HelloMain {
public static void main(String[] args) {
Hoge hoge = new Hoge();
ykmjuku.sample.app2.Fuga fuga = new ykmjuku.sample.app2.Fuga();
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

17. Re:Kayo-System Co.,Ltd.
2012 2 21

18. Re:Kayo-System Co.,Ltd.
2012 2 21

19. package ykmjuku.sample.app;
public class HelloMain {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

20. package ykmjuku.sample.app; package ykmjuku.sample.app;
public class HelloMain { public class Hoge {
public static void main(String[] args) { int hello(){
Hoge hoge = new Hoge(); System.out.println("Hello World");
hoge.hello(); return 0;
} }
} }
Re:Kayo-System Co.,Ltd.
2012 2 21

21. Re:Kayo-System Co.,Ltd.
2012 2 21

22. package ykmjuku.sample.app;
package ykmjuku.sample.app;
public class Hoge {
public class HelloMain {
void hello(){
public static void main(String[] args) {
System.out.println("Hello World");
Hoge hoge = new Hoge();
}
hoge.hello();
static void hello2(){
System.out.println("Hello World");
Hoge.hello2();
}
}
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

23. Re:Kayo-System Co.,Ltd.
2012 2 21

24. Re:Kayo-System Co.,Ltd.
2012 2 21

25. package ykmjuku.sample.app; package ykmjuku.sample.app;
public class HelloMain { public class Hoge {
public static void main(String[] args) { int mCount;
Hoge hoge = new Hoge();
System.out.println("1 "); void print(){
System.out.println(mCount);
hoge.print();
}
hoge.countUp();
System.out.println("2 ");
void countUp(){
hoge.print(); mCount = mCount + 1;
} }
} }
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Re:Kayo-System Co.,Ltd.
2012 2 21

26. Re:Kayo-System Co.,Ltd.
2012 2 21

27. package ykmjuku.sample.app2;
public class Fuga {
public class MyClass {
void println(){
this.hello();
}
void hello(){
System.out.println("MyClass Hello");
}
}
void hello(){
System.out.println("Fuga Hello");
}
public void func(){
new MyClass().println();
}
}
Re:Kayo-System Co.,Ltd.
2012 2 21

28. Re:Kayo-System Co.,Ltd.
2012 2 21

29. Re:Kayo-System Co.,Ltd.
2012 2 21