代码 /** * 坐标转换 * */ public class Coordtransform { private static double x_PI = 3.14159265358979324 * 3000.0 / 180.0; priv…
标签:java基础
for循环、增强for循环和迭代器在ArrayList与LinkedList之间的效率比较
实体Person类 public class Person { private String a; private int b; public Person(String a, int b) { super(); this.a = a; t…