Java 中 Writer flush()方法，示例

原文:https://www . geeksforgeeks . org/writer-flush-in-Java-method-with-examples/

Java 中 Writer 类的同花顺()方法用于同花顺 Writer。通过刷新编写器，这意味着清除编写器中可能存在也可能不存在的任何元素。它既不接受任何参数，也不返回值。

语法:

public void flush()

参数:该方法不接受任何参数。

返回值:此方法不返回值。它只会让作者脸红。

下面的方法说明了 flush()方法的工作原理:

程序 1:

// Java program to demonstrate
// Writer flush() method

import java.io.*;

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

        // The string to be written in the writer
        String str = "GeeksForGeeks";

        try {

            // Create a Writer instance
            Writer writer
                = new PrintWriter(System.out);

            // Write the above string to this writer
            // This will put the string in the writer
            // till it is printed on the console
            writer.write(str);

            // Now clear the writer
            // using flush() method
            writer.flush();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output:

GeeksForGeeks

程序 2:

// Java program to demonstrate
// Writer flush() 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 char to this writer
            // This will put the char in the writer
            // till it is printed on the console
            writer.write(65);

            // Now clear the writer
            // using flush() method
            writer.flush();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output:

A

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