CharsetDecoder 是 Java 中的一个自动检测()方法，示例

原文:https://www . geesforgeks . org/charsetdecoder-isaautodetection-method-in-Java-with-examples/

isaautodetecting()方法是Java . nio . charset . charset decoder 类的内置方法，它告诉这个解码器是否实现了自动检测字符集。

语法 :

public boolean isAutoDetecting()

参数:该功能不接受任何参数。

返回值:该函数返回一个布尔值，说明该字符集解码器是否实现了自动检测字符集。

下面是上述功能的实现:

程序 1:

// Java program to demonstrate
// the above function

import java.nio.charset.*;
import java.util.Iterator;
import java.util.Map;

public class GFG {

    public static void main(String[] args)
    {

        // Gets the charset
        Charset charset = Charset.forName("ISO-2022-CN");

        // Get the CharsetDecoder
        CharsetDecoder decoder = charset.newDecoder();

        // Prints the CharsetDecoder
        System.out.println("CharsetDecoder: " + decoder);

        System.out.println("Is CharsetDecoder auto-detecting: "
                           + decoder.isAutoDetecting());
    }
}

输出:

CharsetDecoder: sun.nio.cs.ext.ISO2022_CN$Decoder@232204a1
Is CharsetDecoder auto-detecting: false

程序二:

// Java program to demonstrate
// the above function

import java.nio.charset.*;
import java.util.Iterator;
import java.util.Map;

public class GFG {

    public static void main(String[] args)
    {

        // Gets the charset
        Charset charset = Charset.forName("x-windows-949");

        // Get the CharsetDecoder
        CharsetDecoder decoder = charset.newDecoder();

        // Prints the CharsetDecoder
        System.out.println("CharsetDecoder: " + decoder);

        System.out.println("Is CharsetDecoder auto-detecting: "
                           + decoder.isAutoDetecting());
    }
}

输出:

CharsetDecoder: sun.nio.cs.ext.DoubleByte$Decoder@232204a1
Is CharsetDecoder auto-detecting: false

参考:https://docs . Oracle . com/javase/9/docs/API/Java/nio/charset/charset decoder . html # isaautodetecting–

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