java中Map的测试-fyyizu-ChinaUnix博客

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/**
*
* @author YDJX
* @version 1.0.0
*
*/
public class MapPutTest {
public static Map<String, String> map = new HashMap<String, String>();
public static void main(String[] args){
PutThread pt = new PutThread();
UseThread ut = new UseThread();
map.put("1", "1-2");
map.put("2", "2-2");
map.put("3", "3-3");
map.put("4", "4-4");
map.put("5", "5-5");
map.put("6", "6-6");
map.put("7", "7-7");
map.put("8", "8-8");
pt.start();
ut.start();
map.put("1", "1-1");
Set<String> set = map.keySet();
for(String str:set){
System.out.println("main out->"+str+":"+map.get(str));
}
}
}
class PutThread extends Thread{
public PutThread() {
}
@Override
public void run() {
System.out.println("start PutThread");
putValue();
System.out.println("end PutThread");
}
public void putValue(){
MapPutTest.map.put("10", "10-10");
MapPutTest.map.put("8", "modify 8");
try {
Thread.currentThread().sleep(3*1000L);
System.out.println("PutThread sleep 3s");
MapPutTest.map.put("1", "latest modify");
MapPutTest.map.put("3", "latest modify");
MapPutTest.map.put("5", "latest modify");
MapPutTest.map.put("6", "latest modify");
System.out.println("PutThread have modify Map");
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
class UseThread extends Thread{
public UseThread() {
}
@Override
public void run() {
System.out.println("start UseThread");
traversal();
System.out.println("start traversal");
Set<String> set = MapPutTest.map.keySet();
for(String str:set){
System.out.println("UseThread out->"+str+":"+MapPutTest.map.get(str));
}
System.out.println("e nd UseThread");
}
public void traversal(){
Set<String> set = MapPutTest.map.keySet();
int i =0;
for(String str:set){
System.out.println(str+":"+MapPutTest.map.get(str));
try {
if(i==4){
Thread.currentThread().sleep(4*1000L);
System.out.println("UseThread sleep 4s");
}
i++;
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}