Java Writer append(CharSequence)方法及实例

Java中Writer类的append(CharSequence)方法用于将指定的CharSequence写入Writer中。这个CharSequence值被作为一个参数。

语法。

public Writer append(CharSequence charSequence)

参数。该方法接受一个强制性参数charSequence，它是要写入写入器中的CharSequence。

返回值。该方法返回这个Writer实例。

下面的方法说明了append(CharSequence)方法的工作。

程序 1:

// Java program to demonstrate// Writer append(CharSequence) method  import java.io.*;  class GFG {    public static void main(String[] args)    {          try {              // Create a Writer instance            Writer writer                = new PrintWriter(System.out);              // Write the CharSequence 'GeeksForGeeks'            // to this writer using append() method            // This will put the charSequence in the writer            // till it is printed on the console            writer.append("GeeksForGeeks");              writer.flush();        }        catch (Exception e) {            System.out.println(e);        }    }}

输出:

GeeksForGeeks

程序2。

// Java program to demonstrate// Writer append(CharSequence) method  import java.io.*;  class GFG {    public static void main(String[] args)    {          try {              // Create a Writer instance            Writer writer                = new PrintWriter(System.out);              // Write the CharSequence 'GFG'            // to this writer using append() method            // This will put the charSequence in the writer            // till it is printed on the console            writer.append("GFG");              writer.flush();        }        catch (Exception e) {            System.out.println(e);        }    }}

输出:

GFG