摘要:
源代码: public class EnumTest { public static void main(String[] args) { int x = 100; int y = 200; System.out.println("x+y=" + y + x + y); System.out.pri 阅读全文
摘要:
测试代码: public class EnumTest { public static void main(String[] args) { Size s=Size.SMALL; Size t=Size.LARGE; //s和t引用同一个对象? System.out.println(s==t); / 阅读全文
摘要:
老师给出的TestDouble.java,经过运行测试,发现两个浮点数相加得数竟然竟然不对0.05 + 0.01 = 0.060000000000000005,1.0 - 0.42 = 0.5800000000000001,4.015 * 100 = 401.49999999999994,不是不对, 阅读全文