Java 中 PrintWriter println(char[])方法，示例
原文:https://www . geesforgeks . org/print writer-printlnchar-method-in-Java-with-examples-2/
Java 中 PrintWriter 类的 println(char[]) 方法用于打印流上指定的字符数组，然后换行。这个字符数组作为一个参数。
语法:
public void println(char[] charArray)
参数:该方法接受一个强制参数字符数组，它是要在流中打印的字符数组。
返回值:此方法不返回值。
异常:如果指定的 charArray()为空，此方法返回空指针异常。
下面的方法说明了 println(char[])方法的工作原理:
程序 1:
// Java program to demonstrate
// PrintWriter println(char[]) method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a PrintWriter instance
PrintWriter writer
= new PrintWriter(System.out);
// Get the character array
// to be printed in the stream
char[] charArray = { 'G', 'e', 'e', 'k', 's',
'F', 'o', 'r',
'G', 'e', 'e', 'k', 's' };
// print the charArray
// to this writer using println() method
// This will put the charArray in the stream
// till it is printed on the console
writer.println(charArray);
writer.flush();
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
GeeksForGeeks
程序 2:
// Java program to demonstrate
// PrintWriter println(char[]) method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a PrintWriter instance
PrintWriter writer
= new PrintWriter(System.out);
// Get the character array
// to be printed in the stream
char[] charArray = { 'G', 'F', 'G' };
// print the charArray
// to this writer using println() method
// This will put the charArray in the stream
// till it is printed on the console
writer.println(charArray);
writer.flush();
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
GFG
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