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Java code:

class A extends Thread
{
void a(){
while(true)
{
synchronized(Main.lock){
while(Main.state != Main.A_RUNNING)
Main.lock.wait();
}
//do sth here
}
}

public void run(){
a();
}
};

class B extends Thread
{
void b(){
while(true)
{


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import org.apache.lucene.analysis.standard.StandardAnalyzer;

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1  public class BirthDate {
2 private int day;
3 private int month;
4 private int year;
5
6 public BirthDate (){}
7
8 public BirthDate (int d,int m,int y){
9 day = d;
......
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