java中的push方法

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java中的push方法

java中的push方法

ArrayDeque类push()方法 (ArrayDeque Class push() method)

• push() Method is available in java.lang package.

  push()方法在java.lang包中可用。

• push() Method is used to push an element onto the stack denoted by this deque.

  push()方法用于将元素压入此双端队列表示的堆栈上。

• push() Method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  push()方法是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消。

• push() Method may throw an exception at the time of pushing an element onto the stack.NullPointerException: This exception may throw when the given element is null exists.

  push()方法在将元素压入堆栈时可能会引发异常。 NullPointerException ：当给定元素为null时，可能引发此异常。

Syntax:

句法：

public void push(T element);

Parameter(s):

参数：

• T element – represents the element to be pushed onto the stack successfully.

  T element –表示要成功推入堆栈的元素。

Return value:

返回值：

The return type of the method is void, it returns nothing.

该方法的返回类型为void ，不返回任何内容。

Example:

例：

// Java program to demonstrate the example // of void push(T element) method of ArrayDeque import java.util.*; public class PushOfArrayDeque { public static void main(String[] args) { // Creating an ArrayDeque with initial capacity of // storing elements Deque < String > d_queue = new ArrayDeque < String > (10); // By using add() method to add elements // in ArrayDeque d_queue.add("C"); d_queue.add("C++"); d_queue.add("Java"); d_queue.add("Php"); d_queue.add("DotNet"); // Display Deque Elements System.out.println("d_queue before push(): "); System.out.println("ArrayDeque Elements = " + d_queue); System.out.println(); // By using push() method to push the // elements at the front of ArrayDeque d_queue.push("Python"); System.out.println(); // Display Deque Elements System.out.println("d_queue after push(): "); System.out.println("ArrayDeque Elements = " + d_queue); } }

Output

输出量

d_queue before push(): ArrayDeque Elements = [C, C++, Java, Php, DotNet] d_queue after push(): ArrayDeque Elements = [Python, C, C++, Java, Php, DotNet]

翻译自: www.includehelp/java/arraydeque-push-method-with-example.aspx

java中的push方法

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