java取得包下的所有类 比如我的pojo包下的所有类 怎么把他们全部都娶出来 放到一个hashmap里面去呢? 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 public class RefConstructor { public static void main(String args[]) throws Exception { RefConstructor ref = new RefConstructor(); ref.getConstructor(); } public void getConstructor() throws Exception { Class c = null; c = Class.forName("java.lang.Long"); Class cs[] = {java.lang.String.class}; System.out.println("\n-------------------------------\n"); Constructor cst1 = c.getConstructor(cs); System.out.println("1、通过参数获取指定Class对象的构造方法:"); System.out.println(cst1.toString()); Constructor cst2 = c.getDeclaredConstructor(cs); System.out.println("2、通过参数获取指定Class对象所表示的类或接口的构造方法:"); System.out.println(cst2.toString()); Constructor cst3 = c.getEnclosingConstructor(); System.out.println("3、获取本地或匿名类Constructor 对象,它表示基础类的立即封闭构造方法。"); if (cst3 != null) System.out.println(cst3.toString()); else System.out.println("-- 没有获取到任何构造方法!"); Constructor[] csts = c.getConstructors(); System.out.println("4、获取指定Class对象的所有构造方法:"); for (int i = 0; i < csts.length; i++) { System.out.println(csts[i].toString()); } System.out.println("\n-------------------------------\n"); Type types1[] = c.getGenericInterfaces(); System.out.println("1、返回直接实现的接口:"); for (int i = 0; i < types1.length; i++) { System.out.println(types1[i].toString()); } Type type1 = c.getGenericSuperclass(); System.out.println("2、返回直接超类:"); System.out.println(type1.toString()); Class[] cis = c.getClasses(); System.out.println("3、返回超类和所有实现的接口:"); for (int i = 0; i < cis.length; i++) { System.out.println(cis[i].toString()); } Class cs1[] = c.getInterfaces(); System.out.println("4、实现的接口"); for (int i = 0; i < cs1.length; i++) { System.out.println(cs1[i].toString()); } System.out.println("\n-------------------------------\n"); Field fs1[] = c.getFields(); System.out.println("1、类或接口的所有可访问公共字段:"); for (int i = 0; i < fs1.length; i++) { System.out.println(fs1[i].toString()); } Field f1 = c.getField("MIN_VALUE"); System.out.println("2、类或接口的指定已声明指定公共成员字段:"); System.out.println(f1.toString()); Field fs2[] = c.getDeclaredFields(); System.out.println("3、类或接口所声明的所有字段:"); for (int i = 0; i < fs2.length; i++) { System.out.println(fs2[i].toString()); } Field f2 = c.getDeclaredField("serialVersionUID"); System.out.println("4、类或接口的指定已声明指定字段:"); System.out.println(f2.toString()); System.out.println("\n-------------------------------\n"); Method m1[] = c.getMethods(); System.out.println("1、返回类所有的公共成员方法:"); for (int i = 0; i < m1.length; i++) { System.out.println(m1[i].toString()); } Method m2 = c.getMethod("longValue", new Class[]{}); System.out.println("2、返回指定公共成员方法:"); System.out.println(m2.toString()); }}不知道对你有没有用 指定类的相对路径依次读取不就行了吗。再一个一个put进去 String dir = "包的相对路径怎么表示?";File directory = new File(dir);File[] files = directory.listFiles();System.out.println(files.length);for (int i = 0; i < files.length; i++) {System.out.println(i + ":" + files[i].getName() + ";;;"+ files[i].getAbsolutePath());System.out.println(files[i].getName());}========================包的相对路径怎么表示啊? java做类似百度文库的功能 用java怎么写定时更新数据库 电信短信接口问题 log4j 问题 服务器交互一个页面里的两个表单的数据 struts2里无法使用jstl byte数组转换char数组或String时的问题 如何在网页中取得登陆人的IP地址(JAVA) Spring动态数据源的配置 紧急求助:tomcat死掉了 如何对hibernate返回的list处理后再返回呢? Myeclipse字符集问题,路过的朋友帮忙看看
public class RefConstructor { public static void main(String args[]) throws Exception {
RefConstructor ref = new RefConstructor();
ref.getConstructor(); } public void getConstructor() throws Exception {
Class c = null;
c = Class.forName("java.lang.Long");
Class cs[] = {java.lang.String.class}; System.out.println("\n-------------------------------\n"); Constructor cst1 = c.getConstructor(cs);
System.out.println("1、通过参数获取指定Class对象的构造方法:");
System.out.println(cst1.toString()); Constructor cst2 = c.getDeclaredConstructor(cs);
System.out.println("2、通过参数获取指定Class对象所表示的类或接口的构造方法:");
System.out.println(cst2.toString()); Constructor cst3 = c.getEnclosingConstructor();
System.out.println("3、获取本地或匿名类Constructor 对象,它表示基础类的立即封闭构造方法。");
if (cst3 != null) System.out.println(cst3.toString());
else System.out.println("-- 没有获取到任何构造方法!"); Constructor[] csts = c.getConstructors();
System.out.println("4、获取指定Class对象的所有构造方法:");
for (int i = 0; i < csts.length; i++) {
System.out.println(csts[i].toString());
} System.out.println("\n-------------------------------\n"); Type types1[] = c.getGenericInterfaces();
System.out.println("1、返回直接实现的接口:");
for (int i = 0; i < types1.length; i++) {
System.out.println(types1[i].toString());
} Type type1 = c.getGenericSuperclass();
System.out.println("2、返回直接超类:");
System.out.println(type1.toString()); Class[] cis = c.getClasses();
System.out.println("3、返回超类和所有实现的接口:");
for (int i = 0; i < cis.length; i++) {
System.out.println(cis[i].toString());
} Class cs1[] = c.getInterfaces();
System.out.println("4、实现的接口");
for (int i = 0; i < cs1.length; i++) {
System.out.println(cs1[i].toString());
} System.out.println("\n-------------------------------\n"); Field fs1[] = c.getFields();
System.out.println("1、类或接口的所有可访问公共字段:");
for (int i = 0; i < fs1.length; i++) {
System.out.println(fs1[i].toString());
} Field f1 = c.getField("MIN_VALUE");
System.out.println("2、类或接口的指定已声明指定公共成员字段:");
System.out.println(f1.toString()); Field fs2[] = c.getDeclaredFields();
System.out.println("3、类或接口所声明的所有字段:");
for (int i = 0; i < fs2.length; i++) {
System.out.println(fs2[i].toString());
} Field f2 = c.getDeclaredField("serialVersionUID");
System.out.println("4、类或接口的指定已声明指定字段:");
System.out.println(f2.toString()); System.out.println("\n-------------------------------\n"); Method m1[] = c.getMethods();
System.out.println("1、返回类所有的公共成员方法:");
for (int i = 0; i < m1.length; i++) {
System.out.println(m1[i].toString());
} Method m2 = c.getMethod("longValue", new Class[]{});
System.out.println("2、返回指定公共成员方法:");
System.out.println(m2.toString()); }
}
不知道对你有没有用
File directory = new File(dir);
File[] files = directory.listFiles();
System.out.println(files.length);
for (int i = 0; i < files.length; i++)
{System.out.println(i + ":" + files[i].getName() + ";;;"+ files[i].getAbsolutePath());System.out.println(files[i].getName());
}========================
包的相对路径怎么表示啊?