Java中的 LinkedBlockingDeque toString() 方法

LinkedBlockingDeque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，用方括号(“[]”)括起来。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 LinkedBlockingDeque 的toString()方法：

方案一：

// Java Program Demonstrate toString()
// method of LinkedBlockingDeque
  
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
  
    {
  
        // create object of LinkedBlockingDeque
        LinkedBlockingDeque LBD
            = new LinkedBlockingDeque();
  
        // Add numbers to end of LinkedBlockingDeque
        LBD.add(7855642);
        LBD.add(35658786);
        LBD.add(5278367);
        LBD.add(74381793);
  
        // Print the queue
        System.out.println("Linked Blocking Deque: " + LBD);
  
        System.out.println("LBD in string " + LBD.toString());
    }
}

输出：

Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793]
LBD in string [7855642, 35658786, 5278367, 74381793]

方案二：

// Java Program Demonstrate toString()
// method of LinkedBlockingDeque
  
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
  
    {
  
        // create object of LinkedBlockingDeque
        LinkedBlockingDeque LBD
            = new LinkedBlockingDeque();
  
        // Add numbers to end of LinkedBlockingDeque
        LBD.add("geeks");
        LBD.add("sudo");
        LBD.add("gate");
        LBD.add("gopal");
  
        // Print the queue
        System.out.println("Linked Blocking Deque: " + LBD);
  
        System.out.println("LBD in string " + LBD.toString());
    }
}

输出：

Linked Blocking Deque: [geeks, sudo, gate, gopal]
LBD in string [geeks, sudo, gate, gopal]

参考： https: Java/util/concurrent/LinkedBlockingDeque.html#toString–