link edblockingrequest 在 Java 中包含()方法
原文:https://www . geeksforgeeks . org/link edblockingeque-contains-method-in-Java/
包含链接锁定请求的(对象 o) 方法，检查参数中传递的元素是否存在于容器中。如果元素存在于容器中，则返回 true，否则返回 false 值。
语法:
public boolean contains(Object o)
参数:该方法接受一个强制参数 o ，其在容器中的存在将在容器中被检查。
返回:如果元素存在，这个方法返回真，否则返回假。
下面的程序说明了包含()方法的 linkedblockingrequest:
程序 1:
// Java Program Demonstrate contains()
// method of LinkedBlockingDeque
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws IllegalStateException
{
// create object of LinkedBlockingDeque
LinkedBlockingDeque<Integer> LBD
= new LinkedBlockingDeque<Integer>();
// Add numbers to end of LinkedBlockingDeque
LBD.add(10);
LBD.add(20);
LBD.add(30);
LBD.add(40);
// before removing print queue
System.out.println("Linked Blocking Deque: " + LBD);
// check for presence using function
if (LBD.contains(10)) {
System.out.println("Linked Blocking Deque contains 10");
}
else {
System.out.println("Linked Blocking Deque does not contain 10");
}
}
}
输出:
Linked Blocking Deque: [10, 20, 30, 40]
Linked Blocking Deque contains 10
程序二:
// Java Program Demonstrate contains()
// method of LinkedBlockingDeque
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
public class GFG {
public static void main(String[] args)
throws IllegalStateException
{
// create object of LinkedBlockingDeque
LinkedBlockingDeque<String> LBD
= new LinkedBlockingDeque<String>();
// Add numbers to end of LinkedBlockingDeque
LBD.add("ab");
LBD.add("cd");
LBD.add("fg");
LBD.add("xz");
// before removing print queue
System.out.println("Linked Blocking Deque: " + LBD);
// check for presence using function
if (LBD.contains("go")) {
System.out.println("Linked Blocking Deque contains 'go'");
}
else {
System.out.println("Linked Blocking Deque does not contain 'go'");
}
}
}
输出:
Linked Blocking Deque: [ab, cd, fg, xz]
Linked Blocking Deque does not contain 'go'
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