夜子まま塾講義2(javaのクラスとメソッド)

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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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夜子まま塾講義2(javaのクラスとメソッド)

  1. 1. Now Loading. Please Wait ... Re:Kayo-System Co.,Ltd.2012 2 21
  2. 2. Re:Kayo-System Co.,Ltd.2012 2 21
  3. 3. Re:Kayo-System Co.,Ltd.2012 2 21
  4. 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. 5. Re:Kayo-System Co.,Ltd.2012 2 21
  6. 6. Re:Kayo-System Co.,Ltd.2012 2 21
  7. 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
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  9. 9. Re:Kayo-System Co.,Ltd.2012 2 21
  10. 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. 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. 12. Re:Kayo-System Co.,Ltd.2012 2 21
  13. 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. 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. 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. 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. 17. Re:Kayo-System Co.,Ltd.2012 2 21
  18. 18. Re:Kayo-System Co.,Ltd.2012 2 21
  19. 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. 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. 21. Re:Kayo-System Co.,Ltd.2012 2 21
  22. 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. 23. Re:Kayo-System Co.,Ltd.2012 2 21
  24. 24. Re:Kayo-System Co.,Ltd.2012 2 21
  25. 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; } } } } 1 0 2 1 Re:Kayo-System Co.,Ltd.2012 2 21
  26. 26. Re:Kayo-System Co.,Ltd.2012 2 21
  27. 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
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  29. 29. Re:Kayo-System Co.,Ltd.2012 2 21

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