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‎README.md‎

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@@ -20,12 +20,12 @@ Java核心技术学习代码兼测试案例<br>
2020
- [x] ├── [org.javacore.collection.util](src/main/java/org/javacore/collection/util)) // Java集合工具类(**)
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- [x] ├── [org.javacore.initAndCleanup](src/main/java/org/javacore/initAndCleanup)) // Java初始化及清理(*)
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- [x] ├── [org.javacore.proxy](src/main/java/org/javacore/proxy) // Java 代理
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- [ ] ├── [org.javacore.io](src/main/java/org/javacore/io) // Java IO
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- [ ] ├── [org.javacore.io.byteoper](src/main/java/org/javacore/io/byteoper) // Java IO 字节操作
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- [ ] ├── [org.javacore.io.zip](src/main/java/org/javacore/io/zip) // Java IO ZIP压缩解压
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- [x] ├── [org.javacore.io](src/main/java/org/javacore/io) // Java IO
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- [x] ├── [org.javacore.io.byteoper](src/main/java/org/javacore/io/byteoper) // Java IO 字节操作
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- [x] ├── [org.javacore.io.zip](src/main/java/org/javacore/io/zip) // Java IO ZIP压缩解压
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- [ ] ├── [org.javacore.nio](src/main/java/org/javacore/nio) // Java NIO
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- [ ] ├── [org.javacore.reflection](src/main/java/org/javacore/reflection) // Java 反射
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- [ ] ├── [org.javacore.rtti](src/main/java/org/javacore/rtti) // Java RTTI
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- [x] ├── [org.javacore.reflection](src/main/java/org/javacore/reflection) // Java 反射
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- [x] ├── [org.javacore.rtti](src/main/java/org/javacore/rtti) // Java RTTI
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- [ ] ├── [org.javacore.thread](src/main/java/org/javacore/thread) // Java 线程
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=================实战JAVA 8=================

‎src/main/java/org/javacore/reflection/ReflectionTest.java‎

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*/
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/**
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* @author Jeff Lee
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* @author Jeff
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* @since 2015-11-9 10:45:19
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* getFields()：获得某个类的所有的公共（public）的字段，包括父类中的字段。
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* getDeclaredFields()：获得某个类的所有声明的字段，
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* 即包括public、private和proteced，但是不包括父类的申明字段。
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* 同样类似的还有
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* getConstructors()和getDeclaredConstructors()、
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* getMethods()和getDeclaredMethods()，
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* 这两者分别表示获取某个类的方法、构造函数。
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* 反射对象构造函数、方法及字段
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*/
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public class ReflectionTest {
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public final int AGE = 1;
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public static void main(String[] args) {
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Class cl = null;
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try {
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cl = Class.forName("org.javacore.reflection.ReflectionTest");
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// cl = Class.forName("org.javacore.reflection.ReflectionTest");
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cl = Class.forName("org.javacore.reflection.User");
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System.out.println("打印析构函数：");
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printConstructors(cl);
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System.out.println("打印方法：");
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// 返回类所有的析构方法
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Constructor[] constructors = cl.getDeclaredConstructors();
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for (Constructor c : constructors){
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// 返回析构方法名称
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// 返回析构方法名称，即是类名 org.javacore.reflection.User
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String name = c.getName();
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System.out.print("name " + name);
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System.out.print(" ");
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// 获取Java语言的修饰符
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// 修饰符由 Java 虚拟机的 public、protected、private、
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for (Method m : methods) {
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// 获取方法返回对象
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Class retType = m.getReturnType();
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// 获取方法名
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String name = m.getName();
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System.out.print("name " + name);
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System.out.print(" ");
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// 获取Java语言的修饰符
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// 修饰符由 Java 虚拟机的 public、protected、private、
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}
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}
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public static void printFields(Class clazz){
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public static void printFields(Class cl){
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// 获取字段Field对象数组
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Field[] fields = clazz.getFields();
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Field[] fields = cl.getFields();
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// Field[] fields = cl.getDeclaredFields();
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for (Field field : fields){
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// 获取字段声明类型对象
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Class type = field.getType();
@@ -121,7 +132,7 @@ public static void printFields(Class clazz){
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String modifiers = Modifier.toString(field.getModifiers());
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if (modifiers.length() > 0)
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System.out.print(modifiers + " ");
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System.out.print(type.getName() + " " + name);
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System.out.println(type.getName() + " " + name);
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}
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}
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}

‎src/main/java/org/javacore/rtti/LearnStatic.java‎

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package org.javacore.rtti;
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/**
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* 通过静态初始化块->初始化age
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* 通过初始化块->　　初始化sex
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* 通过构造方法-> 初始化name
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*/
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public class LearnStatic {
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String name;
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String sex;
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static int age;
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// 构造方法
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public LearnStatic(){
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System.out.println("constructor part");
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name = "wu";
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}
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// 初始化块
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{
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System.out.println("initial part");
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sex = "male";
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}
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// static initial part
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static {
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System.out.println("static initial part");
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age = 18;
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}
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public void print(){
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System.out.println("name:"+ name);
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System.out.println("sex:"+ sex);
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System.out.println("age:"+ age);
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}
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public static void main(String[] args){
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LearnStatic hello = new LearnStatic();
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LearnStatic hello2 = new LearnStatic();
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// hello.print();
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}
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}

‎src/main/java/org/javacore/rtti/ShowMethods.java‎

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* @author Jeff Lee
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* @since 2015-11-2 16:43:41
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* 获取Class方法案例
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* toGenericString是Constructor,Method,Field这三个类专有的方法，
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* 如Constructor类，给出的是对应的构造函数的细节，
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* 比如修饰符，构造函数名和参数列表等
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*/
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public class ShowMethods {
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public static void main(String[] args) {

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