Java中的 LinkedBlockingQueue toString() 方法
LinkedBlockingQueue的toString()方法返回此集合的字符串表示形式。字符串表示由集合元素的列表组成,按其迭代器返回的顺序排列,括在方括号(“[]”)中。相邻元素由字符“、” (逗号和空格)分隔。通过 String.valueOf(Object) 将元素转换为字符串。
句法:
public String toString()
参数:此方法不接受任何参数。
返回:此方法返回此集合的字符串表示形式。
下面的程序说明了 LinkedBlockingQueue 的toString()方法:
方案一:
// Java Program Demonstrate toString()
// method of LinkedBlockingQueue
import java.util.concurrent.LinkedBlockingQueue;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create object of LinkedBlockingQueue
LinkedBlockingQueue LBQ
= new LinkedBlockingQueue();
// Add numbers to end of LinkedBlockingQueue
LBQ.add(7855642);
LBQ.add(35658786);
LBQ.add(5278367);
LBQ.add(74381793);
// Print the queue
System.out.println("Linked Blocking Queue: " + LBQ);
System.out.println("Linked Blocking Queue in string "
+ LBQ.toString());
}
}
输出:
Linked Blocking Queue: [7855642, 35658786, 5278367, 74381793]
Linked Blocking Queue in string [7855642, 35658786, 5278367, 74381793]
方案二:
// Java Program Demonstrate toString()
// method of LinkedBlockingQueue
import java.util.concurrent.LinkedBlockingQueue;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// create object of LinkedBlockingQueue
LinkedBlockingQueue LBQ
= new LinkedBlockingQueue();
// Add numbers to end of LinkedBlockingQueue
LBQ.add("gopal");
LBQ.add("gate");
LBQ.add("GRE");
LBQ.add("CAT");
// Print the queue
System.out.println("Linked Blocking Queue: " + LBQ);
System.out.println("Linked Blocking Queue in string "
+ LBQ.toString());
}
}
输出:
Linked Blocking Queue: [gopal, gate, GRE, CAT]
Linked Blocking Queue in string [gopal, gate, GRE, CAT]
参考: https: Java/util/concurrent/LinkedBlockingQueue.html#toString–