？Java测试一元运算符

/**
 * Created by xabcd on 2019/2/11.
 */
public class TestJava3_14
{public static void main(String args[])
{
    byte a = java.lang.Byte.MAX_VALUE;
    boolean b = false;
    System.out.println("a = "+a+",~a="+(~a));
    System.out.println("b = "+b+",!b = "+(!b));
}
}




结果：
a = 127,~a=-128
b = false,!b = true

~取补码