Java "Hello World" - （C#） @ ウィキ

   public static void main(String[] args){
       System.out.println("Hello World");
       System.out.println("Nice!");
   }

結果
Hello World
Nice!

---

   public static void main(String[] args){
       int a;
       String b;
       a = 1;
       b = "あ";
       System.out.println(a);
       System.out.println(b);
   }

結果
1
あ
※int=数字　　　　String=文字

---

   public static void main(String[] args){
       String a1, a2, b1, b2, c1, c2, c3;
       a1 = "Ａ君";
       a2 = "Ｂさん";
       b1 = "は";
       b2 = "で";
       c1 = "明るく";
       c2 = "元気";
       c3 = "前向き";
       System.out.println(a1 + b1 + c1 + c2);
       System.out.println(a2 + b1 + c2 + b2 + c3);
   }

結果
Ａ君は明るく元気
Ｂさんは元気で前向き

---

   public static void main(String[] args){
       String a;
       a = "Ａ君は";
       System.out.println(a);
       a = a + "元気で明るい";
       System.out.println(a);
   }

結果
Ａ君は
Ａ君は元気で明るい

---

   public static void main(String[] args){
       int a, b, c;
       a = 5;
       b = 3;
       c = 7;
       System.out.println(a + b + c);
       System.out.println(a - b + c);
       System.out.println(a * b + c);
       System.out.println(a * (b + c));
       System.out.println((b + c) * b / a);
   }

結果
15
9
22
50
6
※×は*　　　　÷は/