转自:https://www.cnblogs.com/areyouready/p/7802725.html
false,因为有些浮点数不能完全精确的表示出来
public static void main(String[] args) {
System.out.println(3 * 0.1);
System.out.println(4 * 0.1);
System.out.println(3 * 0.1 == 0.3);
System.out.println(13 * 0.1 == 1.3);
System.out.println(9 * 0.1 == 0.9);
System.out.println(3 * 0.1 / 3);
}
结果是:
0.30000000000000004
0.4
false
true
true
0.10000000000000002