Java StringWriter append(char)方法及实例
Java中StringWriter类的append(char)方法用于在写入器上追加指定的char值。这个char值被作为一个参数。
语法。
public void append(char charValue)
参数。这个方法接受一个强制性的参数charValue,它是要附加到写入器上的char值。
返回值。这个方法不返回任何值。
下面的程序说明了append(char)方法的工作。
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);
}
}
}
输出:
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);
}
}
}
输出:
G