JAVA基礎初学のデータ型及び演算子アルゴリズム

//          
public class Holle {
    public static void main(String[] args){
    //8       
    byte a1 = 127;//   [-128,-127]，    
    short a2 = 128;//    
    int a3 = 125555;//    
    long a4 = 124L;//  L  long    ，    
    float a5 = 1.1F;//  F  float    
    double a6 = 1.11D;//  D  double    
    char a7 = ' ';//char ''       ,''   2   ,       2   .
    System.out.println(a1);//127
    System.out.println(a2);//128
    System.out.println(a3);//125555
    System.out.println(a4);//124
    System.out.println(a5);//1.1
    System.out.println(a6);//1.11
    System.out.println(a7);// 
    //String       ,    
    String a8 = "7+5" ;//String   ""       
    System.out.println(7 + a8);//   a8 7+5
    //       
    String a9 = "\"7+5\"";//            \  
    System.out.println(7 + a9);
    /*
     *       :
     *      ,           ,    int  
     *        ,                ,           
     *  int    +double     ,         double  ,
     *               ,                ,    
     * String       ,""         ,          ,        ,     \   
     */
    System.out.println("----------------------------------------------------------------");



    //     
    int b1 = 15;//    b1    15
    //       : b1=b1++     (        ++    )b1  1,  b1    16
    int b2 = b1++;// ++   , b1    ,        , b2==b1    ==15
    System.out.println(b1);//16
    System.out.println(b2);//15

    int b4 = 15;//    b4    15
    int b3 = ++b4;//++   ,       ,b4=++b4, ++b4==15+1==16,16   b3
    System.out.println(b4);//16
    System.out.println(b3);//16
    /*
     *       
     *       ,            ,          
     * %  ,            ,
     *   (++)  (--),++result result++   result+1,                ,        .
     */
    System.out.println("----------------------------------------------------------------");

    //     (=,+=,-=,*=,/=,%=)
    int c1 = 3;
    int c2 = 2;
    c1 += c2;//     c1=c1+c2,    
    System.out.println(c1);//5
    System.out.println(c2);//2
    System.out.println("----------------------------------------------------------------");

    //     (==,!=,,<=,>=,instanceof,       )
    int d1 = 10;//   A
    int d2 = 12;//   B
    boolean result = d1 >= d2;
    System.out.println(result);//       false true.     false.
    /*
     *     :boolean result =    A           B;  
     * instanceof         ,            
     */
    System.out.println("----------------------------------------------------------------");   

    //     (&,|,^,!,&&,||,         )
    boolean result1 = true & true;//  true
    boolean result2 = false & true;// false
    boolean result3 = true & false;// false
    boolean result4 = false & false;// false
    System.out.println(result1);//true
    System.out.println(result2);//false
    System.out.println(result3);//false
    System.out.println(result4);//false 

    System.out.println("----------------------------------------------------------------");  

    boolean result5 = true | true;// |  OR, ,         true ,    true
    boolean result6 = false ^ true;// ^    ,XOR,  A B    ,    true,   false
    boolean result7 = !false;// !    ,Not,true   false
    boolean result8 = false && false;// &    ,      .    , A false,     B   
    boolean result9 = true|| false;// |    ,      ,    , A true,     B   
    System.out.println(result5);//true
    System.out.println(result6);//true
    System.out.println(result7);//true
    System.out.println(result8);//false
    System.out.println(result9);//true
    /*
     *       :
     *         ( || )
     *     B           ,       
     *   :boolean result = true || (1/0=1);         
     */
    System.out.println("----------------------------------------------------------------");  



    //     (        ,          )
    int e1 = 5;
    int e2 = 7;
    int num1 = e2 - e1;
    int num2 = num1 >= 1.5 ? e1 : e2;
    System.out.println(num2);
    /*
     *     :
     *     :boolean    ?  1 :  2;
     * num1 >= 1.5   boolean     
     *   num1   boolean      ,       ,        
     */
    System.out.println("----------------------------------------------------------------");  



    //    (&,|,^,~,<>,>>>,     ,    :0  false,1  true)
    int f1 = 3;
    int f2 = 2;
    /*
     *      :
     *     0b00000011  =3
     *   & 0b00000010  =2
     *   ------------
     *     0b00000010  =2
     */
    System.out.println(f1 & f2);//      1 ,     1,   0
    /*
     *      :
     *     0b00000011  =3
     *   | 0b00000010  =2
     *   ------------
     *     0b00000011  =3
     */
    System.out.println(f1 | f2);//       1  1,    1
    /*
     *     0b00000011  =3
     *   ^ 0b00000010  =2
     *   ------------
     *     0b00000001  =1 
     */
    System.out.println(f1 ^ f2);//       0,   1
    /*
     *     0b00000011  =3
     *   ^ 
     *   ------------
     *     0b11111100  =-4
     */
    System.out.println(~f1);//        1  0,0  1

    }
}