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Copy pathABtpTest.java
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55 lines (48 loc) · 1.5 KB
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package btp.oneP;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Scanner;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Semaphore;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.AbstractQueuedSynchronizer;
import java.util.concurrent.locks.ReentrantLock;
public class ABtpTest {
public static void main(String[] args) {
PrintStream p = System.out;
Scanner sc =new Scanner(System.in);
try{
/*ArrayList as = returnArray();
ArrayList<String> ass = (ArrayList<String>)as;
p.println(ass);
as = returnArrayNew();
p.println(as);
ass = (ArrayList<String>)as;
p.println(ass);*/
List myIntList = new LinkedList();//1
myIntList.add(new Integer(0));//2
Integer x = (Integer) myIntList.iterator().next();//3
}catch(Exception e){
e.printStackTrace();
}finally{
sc.close();
p.close();
}
AbstractQueuedSynchronizer aqs = null;
CountDownLatch cdl = null;
Semaphore sp = null;
ArrayBlockingQueue bq = null;
ReentrantLock lock = null;
AtomicInteger ai = null;
}
public static ArrayList<String> returnArray(){
return new ArrayList<String>(Arrays.asList(new String[]{"AA","BB","C"}));
}
public static ArrayList returnArrayNew(){
return new ArrayList<String>(Arrays.asList(new String[]{"CC","DD","E"}));
}
}