Java Modifier isTransient(mod)用法及代碼示例

java.lang.reflect.Modifier的isTransient(mod)方法用於檢查整數參數是否包含瞬態修飾符。如果此整數參數表示瞬時類型Modifier，則方法返回true，否則返回false。

用法:

public static boolean isTransient(int mod)

參數：此方法接受整數名稱，因為mod代表一組修飾符。

返回：如果mod包含瞬時修飾符，則此方法返回true；否則為假。

以下示例程序旨在說明isTransient()方法：
示例1:

// Java program to illustrate isTransient() method 
  
import java.lang.reflect.*; 
  
public class GFG { 
  
    public static transient int number = 1000; 
  
    public static void main(String[] args) 
        throws NoSuchFieldException, 
               SecurityException 
    { 
  
        // get Field class object 
        Field field 
            = GFG 
                  .class
                  .getDeclaredField("number"); 
  
        // get Modifier Integer value 
        int mod = field.getModifiers(); 
  
        // check Modifier is transient or not 
        boolean result 
            = Modifier.isTransient(mod); 
  
        System.out.println("Mod integer value "
                           + mod + " is transient : "
                           + result); 
    } 
}

輸出：

Mod integer value 137 is transient : true

示例2:

// Java program to illustrate isTransient() 
  
import java.io.Serializable; 
import java.lang.reflect.*; 
  
public class GFG { 
  
    public static void main(String[] args) 
        throws NoSuchFieldException, 
               SecurityException 
    { 
  
        // get Field class object 
        Field field 
            = GFGTest 
                  .class
                  .getDeclaredField("password"); 
  
        // get Modifier Integer value 
        int mod = field.getModifiers(); 
  
        // check Modifier is transient or not 
        boolean result = Modifier.isTransient(mod); 
  
        System.out.println("Mod integer value "
                           + mod 
                           + " is transient : "
                           + result); 
    } 
  
    // A sample class that uses a transient keyword to 
    // skip their serialization. 
    class GFGTest implements Serializable { 
  
        // Making password transient for security 
        private transient String password; 
  
        // other code 
    } 
}

輸出：

Mod integer value 130 is transient : true

參考文獻： https://docs.oracle.com/javase/10/docs/api/java/lang/reflect/Modifier.html#isTransient(int)

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注：本文由純淨天空篩選整理自AmanSingh2210大神的英文原創作品 Modifier isTransient(mod) 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。