修饰符是 Java 中的 Transient(mod)方法,带有示例

原文:https://www . geesforgeks . org/modifier-is transientmod-method-in-Java-with-examples/

Java . lang . reflect . modifierisTransient(mod) 方法用于检查整数参数是否包含瞬态修饰符。如果此整数参数表示瞬态类型修饰符,则方法返回 true,否则返回 false。

语法:

public static boolean isTransient(int mod)

参数:该方法接受整数名称,因为 mod 表示一组修饰符。

返回:如果 mod 包含瞬态修改器,则该方法返回 true 否则为假。

下面的程序说明了 isTransient()方法: 程序 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);
    }
}

Output:

Mod integer value 137 is transient : true

程序 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
    }
}

Output:

Mod integer value 130 is transient : true

参考文献:T2