ObjectStreamField類toString()方法 (ObjectStreamField Class toString() method)

• toString() method is available in java.io package.

  toString()方法在java.io包中可用。

• toString() method is used to return a string that defines this field.

  toString()方法用于返回定義此字段的字符串。

• toString() 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.

  toString()方法是一種非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• toString() method does not throw an exception at the time of string representation.

  toString()方法在字符串表示時不會引發異常。

Syntax:

句法：

    public String toString();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of the method is String, it returns string denotation of this ObjectStreamField.

方法的返回類型為String ，它返回此ObjectStreamField的字符串表示形式。

Example:

例：

// Java program to demonstrate the example 
// of String toString() method 
// of ObjectStreamField
import java.io.*;
import java.util.*;
public class ToStringOfOSF {
public static void main(String[] args) {
// Instantiates ObjectStreamClass for Calendar
ObjectStreamClass o_sc = ObjectStreamClass.lookup(Calendar.class);
// By using getField() method is to get the field
// value from Calendar 
ObjectStreamField field1 = o_sc.getField("isTimeSet");
ObjectStreamField field2 = o_sc.getField("fields");
// By using toString() method is used to
// represent the field as a string
String field1_str = field1.toString();
System.out.println("field1.toString(): " + field1_str);
String field2_str = field2.toString();
System.out.println("field2.toString(): " + field2_str);
}
}

Output

輸出量

field1.toString(): Z isTimeSet
field2.toString(): [I fields

翻譯自: https://www.includehelp.com/java/objectstreamfield-tostring-method-with-example.aspx