Java Properties elements()用法及代碼示例

Properties類的elements()方法用於獲取此Properties對象的枚舉。可以進一步使用接收到的此Enumeration順序檢索元素。

用法:

public Enumeration elements()

參數：此方法不接受任何參數。

返回值：此方法返回此Properties對象中的值的Enumeration。

以下示例程序旨在說明elements()方法：

示例1:

// Java program to demonstrate 
// elements() method. 
  
import java.util.*; 
  
public class GFG { 
  
    // Main method 
    public static void main(String[] args) 
    { 
  
        // Create a properties and add some values 
        Properties properties = new Properties(); 
        properties.put("Pen", 10); 
        properties.put("Book", 500); 
        properties.put("Clothes", 400); 
        properties.put("Mobile", 5000); 
  
        // Print Properties details 
        System.out.println("Current Properties: "
                           + properties.toString()); 
  
        // Creating an empty enumeration to store 
        Enumeration enu = properties.elements(); 
  
        System.out.println("The enumeration of values are:"); 
  
        // Displaying the Enumeration 
        while (enu.hasMoreElements()) { 
            System.out.println(enu.nextElement()); 
        } 
    } 
}

輸出：

Current Properties: {Book=500, Mobile=5000, Pen=10, Clothes=400}
The enumeration of values are:
500
5000
10
400

示例2:

// Java program to demonstrate 
// elements() method. 
  
import java.util.*; 
  
public class GFG { 
  
    // Main method 
    public static void main(String[] args) 
    { 
  
        // Create a properties and add some values 
        Properties properties = new Properties(); 
  
        properties.put(1, "100RS"); 
        properties.put(2, "500RS"); 
        properties.put(3, "1000RS"); 
  
        // print Properties details 
        System.out.println("Current Properties: "
                           + properties.toString()); 
  
        // Creating an empty enumeration to store 
        Enumeration enu = properties.elements(); 
  
        System.out.println("The enumeration of values are:"); 
  
        // Displaying the Enumeration 
        while (enu.hasMoreElements()) { 
            System.out.println(enu.nextElement()); 
        } 
    } 
}

輸出：

Current Properties: {3=1000RS, 2=500RS, 1=100RS}
The enumeration of values are:
1000RS
500RS
100RS

參考：https://docs.oracle.com/javase/9/docs/api/java/util/Properties.html#elements–

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注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 Properties elements() 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。