Java 使用 Scanner 类在文本文件中写入
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Writing Inside a text file using Scanner Class
提问by Vinay Verma
I have Come across so many programmes of how to read a text file using Scannerin Java. Following is some dummy code of Reading a text file in Java using Scanner:
我遇到过很多关于如何使用ScannerJava读取文本文件的程序。以下是使用 Java 读取文本文件的一些虚拟代码Scanner：
public static void main(String[] args) {
File file = new File("10_Random");
try {
Scanner sc = new Scanner(file);
while (sc.hasNextLine()) {
int i = sc.nextInt();
System.out.println(i);
}
sc.close();
}
catch (FileNotFoundException e) {
e.printStackTrace();
}
}
But, please anyone help me in "Writing" some text (i.e. String or Integer type text) inside a .txtfile using Scannerin java. I don't know how to write that code.
但是，请任何人帮助我在 java 中.txt使用的文件中“写入”一些文本（即字符串或整数类型的文本）Scanner。我不知道如何编写该代码。
回答by Sanjeev
Scanneris for reading purposes. You can use Writerclass to write data to a file.
Scanner是为了阅读。您可以使用Writer类将数据写入文件。
For Example:
例如：
Writer wr = new FileWriter("file name.txt");
wr.write(String.valueOf(2)) // write int
wr.write("Name"); // write string
wr.flush();
wr.close();
Hope this helps
希望这可以帮助
回答by jamesomahony
Scannercan't be used for writing purposes, only reading. I like to use a BufferedWriterto write to text files.
Scanner不能用于写作目的，只能用于阅读。我喜欢使用 aBufferedWriter写入文本文件。
BufferedWriter out = new BufferedWriter(new FileWriter(file));
out.write("Write the string to text file");
out.newLine();
