摘要：
package Demo_2_12_email验证案例; public class VerifyEmail { private final String REGEX = "[a-zA-Z0-9]\\w+@[a-zA-Z0-9]+\\.(cn|com|com.cn|net|gov)+"; public 阅读全文
摘要：
import java.util.Random; class Coin{ private int one = 0; private int zero = 0; private Random random = new Random(); public void throwCoin(int count) 阅读全文