修饰符是 Java 中的 Private(mod)方法,示例

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

Java . lang . reflect . modifierisPrivate(mod) 方法用于检查整数参数是否包含私有修饰符。如果此整数参数表示私有类型修饰符,则方法返回 true,否则返回 false。

语法:

public static boolean isPrivate(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 包含私有修饰符,则该方法返回 true 否则为假。

以下程序说明 isPrivate()方法: 程序 1:

// Java program to illustrate isPrivate() method

import java.lang.reflect.*;

public class GFG {

    // create a String Field
    private String string;

    public static void main(String[] args)
        throws NoSuchFieldException,
               SecurityException
    {

        // get Field class object
        Field field
            = GFG.class
                  .getDeclaredField("string");

        // get Modifier Integer value
        int mod = field.getModifiers();

        // check Modifier is private or not
        boolean result = Modifier.isPrivate(mod);

        System.out.println("Mod integer value "
                           + mod + " is private : "
                           + result);
    }
}

Output:

Mod integer value 2 is private : true

程序 2:

// Java program to illustrate isPrivate()

import java.lang.reflect.*;

public class GFG {

    // create an int Field
    public int numbers;

    public static void main(String[] args)
        throws NoSuchFieldException,
               SecurityException
    {

        // get Field class object
        Field field
            = GFG.class
                  .getDeclaredField("numbers");

        // get Modifier Integer value
        int mod = field.getModifiers();

        // check Modifier is private or not
        boolean result
            = Modifier.isPrivate(mod);

        System.out.println("Mod integer value "
                           + mod + " is private : "
                           + result);
    }
}

Output:

Mod integer value 1 is private : false

参考文献:https://docs . Oracle . com/javase/10/docs/API/Java/lang/reflect/modifier . html # isPrivate(int)