Java AbstractList hashCode()用法及代碼示例

java.util.AbstractList 類的 hashCode() 方法用於返回此列表的哈希碼值。

用法:

public int hashCode()

返回值：此方法返回此列表的哈希碼值。

以下是說明 hashCode() 方法的示例。

範例1：


// Java program to demonstrate
// hashCode() method
// for Integer value
  
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {
  
        try {
  
            // Creating object of AbstractList<Integer>
            AbstractList<Integer>
                arrlist1 = new ArrayList<Integer>();
  
            // Populating arrlist1
            arrlist1.add(10);
            arrlist1.add(20);
            arrlist1.add(30);
            arrlist1.add(40);
            arrlist1.add(50);
  
            // print arrlist1
            System.out.println("ArrayListlist:" + arrlist1);
  
            // getting the value at the index 3
            // using get() method
            int code = arrlist1.hashCode();
  
            // print the value
            System.out.println("HashCode:" + code);
        }
  
        catch (IndexOutOfBoundsException e) {
            System.out.println("Exception thrown:" + e);
        }
    }
}

輸出：

ArrayListlist:[10, 20, 30, 40, 50]
HashCode:38490301

範例2：


// Java program to demonstrate
// hashCode() method
// for String value
  
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {
  
        try {
  
            // Creating object of AbstractList<String>
            AbstractList<String>
                arrlist1 = new ArrayList<String>();
  
            // Populating arrlist1
            arrlist1.add("A");
            arrlist1.add("B");
            arrlist1.add("C");
            arrlist1.add("D");
            arrlist1.add("E");
  
            // print arrlist1
            System.out.println("ArrayListlist:"
                               + arrlist1);
  
            // getting the value at the index 3
            // using get() method
            int code = arrlist1.hashCode();
  
            // print the value
            System.out.println("HashCode:" + code);
        }
  
        catch (IndexOutOfBoundsException e) {
            System.out.println("Exception thrown:" + e);
        }
    }
}

輸出：

ArrayListlist:[A, B, C, D, E]
HashCode:90690786

相關用法

注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 AbstractList hashCode() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。