Java中PrintWriter类的clearError()方法用于清除此PrintWriter实例的错误状态。它清除流中可能发生或未发生的任何错误。因此,checkError()方法在此方法之后将始终返回false。
用法:
protected void clearError()
参数:此方法不接受任何参数。
返回值:此方法不返回任何值。
下面的方法说明了clearError()方法的用法方式:
示例1:
// Java program to demonstrate
// PrintWriter clearError() method
import java.io.*;
class GFG extends PrintWriter {
// Defining the protected constructor
public GFG(OutputStream out)
{
super(System.out);
}
// Driver Code
public static void main(String[] args)
{
// The string to be written in the Writer
String str = "GeeksForGeeks";
try {
// Create a PrintWriter instance
GFG writer
= new GFG(System.out);
// Write the above string to this writer
// This will put the string in the stream
// till it is printed on the console
writer.write(str);
// Now clear the stream
// using clearError() method
writer.clearError();
System.out.println("\nHas any error occurred: "
+ writer.checkError());
}
catch (Exception e) {
System.out.println(e);
}
}
}
输出:
GeeksForGeeks Has any error occurred: false
示例2:
// Java program to demonstrate
// PrintWriter clearError() method
import java.io.*;
class GFG extends PrintWriter {
// Defining the protected constructor
public GFG(OutputStream out)
{
super(System.out);
}
// Driver Code
public static void main(String[] args)
{
// The string to be written in the Writer
String str = "GeeksForGeeks";
try {
// Create a PrintWriter instance
GFG writer
= new GFG(System.out);
// Write the char to this writer
// This will put the char in the stream
// till it is printed on the console
writer.write(65);
// Now clear the stream
// using clearError() method
writer.clearError();
System.out.println("\nHas any error occurred: "
+ writer.checkError());
}
catch (Exception e) {
System.out.println(e);
}
}
}
输出:
A Has any error occurred: false
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注:本文由纯净天空筛选整理自Kirti_Mangal大神的英文原创作品 PrintWriter clearError() method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。