ByteArrayInputStream类markSupported()方法 (ByteArrayInputStream Class markSupported() method)

• markSupported() method is available in java.util package.

  markSupported()方法在java.util包中可用。

• markSupported() method is used to check whether this ByteArrayInputStream support mark() and reset() methods or not.

  markSupported()方法用于检查此ByteArrayInputStream是否支持mark()和reset()方法。

• markSupported() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  markSupported()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• markSupported() method does not throw an exception at the time of checking supportive methods.

  在检查支持方法时， markSupported()方法不会引发异常。

Syntax:

句法：

    public boolean markSupported();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of the method is boolean, it returns true when this stream support mark() and reset() method otherwise it returns false.

该方法的返回类型为boolean ，当此流支持mark()和reset()方法时返回true，否则返回false。

Example:

例：

// Java program to demonstrate the example
// of boolean markSupported() method of
// ByteArrayInputStream
import java.io.*;
public class MarkSupportedBAIS {public static void main(String[] args) throws Exception {byte[] by = {97,
98,
98,
99
};
// Instantiates ByteArrayInputStream
ByteArrayInputStream byte_s = new ByteArrayInputStream(by);
// By using markSupported() method check
// whether this stream byte_s support
// mark() and reset() or not
boolean status = byte_s.markSupported();
System.out.println("byte_s.markSupported(): " + status);
byte_s.close();
}
}

Output

输出量

byte_s.markSupported(): true

翻译自: https://www.includehelp.com/java/bytearrayinputstream-marksupported-method-with-example.aspx