ioException()方法是java.util.Formatter的內置方法,它返回此格式化程序的Appendable最後拋出的IOException。如果目標的append()方法從不拋出IOException,則此方法將始終返回null。
用法:
public IOException ioException()
參數:該函數不接受任何參數。
返回值:該函數返回IOException,它是Formatter的附加項最後拋出的異常。
下麵是上述函數的實現:
示例1:
// Java program to implement
// the above function
import java.util.Formatter;
import java.util.Locale;
public class Main {
public static void main(String[] args)
{
// Get the string Buffer
StringBuffer buffer
= new StringBuffer();
// Object creation
Formatter frmt
= new Formatter(buffer,
Locale.CANADA);
// Format a new string
String name = "My name is Gopal Dave";
frmt.format("What is your name? \n%s !",
name);
// Print the Formatted string
System.out.println(frmt);
// flushes the formatter
frmt.flush();
System.out.println("Flushed");
}
}
輸出:
What is your name? My name is Gopal Dave ! Flushed
示例2:
// Java program to implement
// the above function
import java.util.Formatter;
import java.util.Locale;
public class Main {
public static void main(String[] args)
{
// Get the string Buffer
StringBuffer buffer
= new StringBuffer();
// Object creation
Formatter frmt
= new Formatter(buffer,
Locale.CANADA);
// Format a new string
String name = "My name is Gopal Dave";
frmt.format("What is your name? \n%s !",
name);
System.out.println("The last exception thrown: "
+ frmt.ioException());
// Closes the format
frmt.close();
}
}
輸出:
The last exception thrown: null
輸出:
The last exception thrown: null
參考: https://docs.oracle.com/javase/10/docs/api/java/util/Formatter.html#flush()
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注:本文由純淨天空篩選整理自gopaldave大神的英文原創作品 Formatter ioException() method in Java with Examples。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。