Java 中 StringWriter 追加(CharSequence)方法示例

原文:https://www . geeksforgeeks . org/stringwriter-appendcharsequence-method-in-Java-with-examples/

Java 中 StringWriter 类的 append(CharSequence) 方法用于在编写器上编写指定的 CharSequence。这个字符序列值被作为一个参数。

语法:

public StringWriter append(CharSequence charSequence)

参数:此方法接受一个强制参数字符序列，它是要写入编写器的字符序列。

返回值:这个方法返回这个 StringWriter 实例。

下面的程序说明了 append(CharSequence)方法的工作原理:

程序 1:

// Java program to demonstrate
// StringWriter append(CharSequence) method

import java.io.*;

class GFG {
    public static void main(String[] args)
    {

        try {

            // Create a StringWriter instance
            StringWriter writer
                = new StringWriter();

            // 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");

            System.out.println(writer.toString());
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output:

GeeksForGeeks

程序 2:

// Java program to demonstrate
// StringWriter append(CharSequence) method

import java.io.*;

class GFG {
    public static void main(String[] args)
    {

        try {

            // Create a StringWriter instance
            StringWriter writer
                = new StringWriter();

            // 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);
        }
    }
}

Output:

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