LinkedBlockingQueue的toString()方法返回此集合的字符串表示形式。字符串表示形式包括一個集合元素的列表,這些元素按其迭代器返回的順序排列,並括在方括號(“[]”)中。相鄰元素之間用字符“,”(逗號和空格)分隔。元素通過String.valueOf(Object)轉換為字符串。
用法:
public String toString()
參數:此方法不接受任何參數。
返回值:此方法返回此集合的字符串表示形式。
以下示例程序旨在說明LinkedBlockingQueue的toString()方法:
示例1:
// 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<Integer> LBQ
= new LinkedBlockingQueue<Integer>();
// 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());
}
}
輸出:
Linked Blocking Queue: [7855642, 35658786, 5278367, 74381793] Linked Blocking Queue in string [7855642, 35658786, 5278367, 74381793]
示例2:
// 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<String> LBQ
= new LinkedBlockingQueue<String>();
// 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());
}
}
輸出:
Linked Blocking Queue: [gopal, gate, GRE, CAT] Linked Blocking Queue in string [gopal, gate, GRE, CAT]
參考: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/LinkedBlockingQueue.html#toString–
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