摘要：public class DOM4JReader { public static void main(String[] args) throws DocumentException { //读取文件的位置 File file=new File("D:"+File.separator+"ou.xml" 阅读全文

摘要：首先要导入jdom的jar包 //写xml public class WriteXML { public static void main(String[] args) throws FileNotFoundException, IOException { Element addressList=n 阅读全文

摘要：代码如下： public class Demo2 { public static void main(String[] args) throws ClassNotFoundException, SQLException { //加载驱动 Class.forName("com.mysql.jdbc.D 阅读全文

摘要：public class SingletonDemo5 implements Serializable{ private static SingletonDemo5 instance; //防止单例被反射 private SingletonDemo5(){ if(null!=instance){ t 阅读全文

摘要：/** * 测试单例模式：恶汉式 * 有点：线程安全，效率低，类一加载的时候就new对象 * @author codeMan * */public class SingletonDemo1 { private static SingletonDemo1 instance=new SingletonD 阅读全文