>
class Test{
//Test类的无参构造器
Test(){
System.out.println("Test类的无参构造方法");
}
//构造代码块
{
System.out.println("Test类的构造代码块");
}
}
public class Demo1 {
public ...
public class BankService {
//创建用户方法
public static String createUser(String name, String identity, String mobile, int age) throws IOException {
StringBuilder stringBuilder = new StringBuilde...
