classInfo{//定义信息类privateStringname="李兴华";//定义name属性privateStringcontent="JAVA讲师";//定义content属性publicvoidsetName(Stringname){this.name=name;}publicvoidsetContent...

classMyThreadimplementsRunnable{privatebooleanflag=true;//定义标志位publicvoidrun(){inti=0;while(this.flag){System.out.println(Thread.currentThread().getName()+"运行，i...

classMyThreadimplementsRunnable{privateintticket=5;//假设一共有5张票publicvoidrun(){for(inti=0;i<100;i++){if(ticket>0){//还有票try{Thread.sleep(300);//加入延迟}catch(In...

classMyThreadextendsThread{privateinttime;publicMyThread(Stringname,inttime){super(name);//设置线程名称this.time=time;//设置休眠时间}publicvoidrun(){try{Thread.sleep(this.t...

classMyThreadimplementsRunnable{//实现Runnable接口publicvoidrun(){//覆写run()方法for(inti=0;i<3;i++){System.out.println(Thread.currentThread().getName()+"运行，i="+i);/...

classMyThreadimplementsRunnable{//实现Runnable接口，作为线程的实现类privateStringname;//表示线程的名称publicMyThread(Stringname){this.name=name;//通过构造方法配置name属性}publicvoidrun(){//覆...

importjava.util.List;importjava.util.ArrayList;publicclassCourse{privateStringname;privateintcredit;privateList<Student>allStudents;publicCourse(){this.al...

importjava.util.List;importjava.util.ArrayList;publicclassSchool{privateStringname;privateList<Student>allStudents;publicSchool(){this.allStudents=newArra...

importjava.util.Properties;publicclassPropertiesDemo01{publicstaticvoidmain(Stringargs[]){Propertiespro=newProperties();//创建Properties对象pro.setProperty("BJ","Be...

importjava.util.Stack;publicclassStackDemo{publicstaticvoidmain(Stringargs[]){Stack<String>s=newStack<String>();s.push("A");//入栈s.push("B");//入栈s.pu...

importjava.util.Collections;importjava.util.List;importjava.util.Set;publicclassCollectionsDemo01{publicstaticvoidmain(Stringargs[]){List<String>allList=C...

importjava.util.Map;importjava.util.SortedMap;importjava.util.TreeMap;publicclassSortedMapDemo{publicstaticvoidmain(Stringargs[]){SortedMap<String,String>...

importjava.util.IdentityHashMap;importjava.util.HashMap;importjava.util.Set;importjava.util.Iterator;importjava.util.Map;classPerson{privateStringname;privatein...

importjava.util.HashMap;importjava.util.Map;importjava.util.Set;importjava.util.Iterator;publicclassForeachDemo02{publicstaticvoidmain(Stringargs[]){Map<Stri...

importjava.util.HashMap;importjava.util.Map;publicclassHashMapDemo01{publicstaticvoidmain(Stringargs[]){Map<String,String>map=null;//声明Map对象，其中key和value的类...