Java學習——Java運算符

位運算符

A = 0011 1100
B = 0000 1101
-----------------
A&b = 0000 1100
A | B = 0011 1101
A ^ B = 0011 0001
A << 2 = 1111 0000
A >>> 2 = 0000 1111 
~A= 1100 0011

例子

package import_test;public class Employee {public static void main(String args[]){int a = 60;int b = 13;System.out.println(a | b);System.out.println(a & b);System.out.println(a ^ b);System.out.println(~a);System.out.println(a << 2);System.out.println(a >>> 2);}
}

?結果

61
12
49
-61
240
15

條件運算符

public class Employee {public static void main(String args[]){int a = 10;int b = 8;String rev = a > b ? "a > b" : "a<= b";System.out.println(rev);}
}

結果

a > b

instanceOf運算符

public class Employee {public static void main(String args[]){Employee eg = new Employee();String s = "String";System.out.println(s instanceof String);System.out.println(eg instanceof Employee);//boolean b = s instanceof Employee);//System.out.println(b);
    }
}

結果

true
true

?