Java 中 StringWriter 追加(char)方法示例
原文:https://www . geesforgeks . org/stringwriter-append char-method-in-Java-with-examples/
Java 中 StringWriter 类的追加(char) 方法用于在编写器上追加指定的 char 值。这个字符值被作为一个参数。
语法:
public void append(char charValue)
参数:该方法接受一个强制参数字符值，它是要附加到编写器上的字符值。
返回值:此方法不返回值。
下面的程序说明了 append(char)方法的工作原理:
程序 1:
// Java program to demonstrate
// StringWriter append(char) method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a StringWriter instance
StringWriter writer
= new StringWriter();
// Append the char value 'A'
// to this writer using append() method
// This will put the charValue in the
// writer till it is appended on the console
writer.append('A');
System.out.println(writer.toString());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
A
程序 2:
// Java program to demonstrate
// StringWriter append(char) method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a StringWriter instance
StringWriter writer
= new StringWriter();
// Append the char value 'G'
// to this writer using append() method
// This will put the charValue in the
// writer till it is appended on the console
writer.append('G');
System.out.println(writer.toString());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
G
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