当文件不存在时，Java BufferedWriter 不创建文本文件

Question

所以我正在尝试使用 BufferedWriter 类来创建和写入文本文件。但是，永远不会创建文件，也不会产生任何错误。但是，如果我创建一个文本文件并指定其路径，它将写入该文件；似乎它只是不创建文件。有什么建议么？提前致谢。

public class test3 {
public static void main(String[] args) throws IOException {
    int ctr = 1;
    int count = 10;
    Random r = new Random();
    String[] textData = new String[count*3];
    
    String storeFile = "testComplete";
    String fn = "C:\\Users\\13023\\eclipse-workspace\\test\\src\\testprac\\" + storeFile;
    for (int i = 0; i < count*3; i++) {
        textData[i] = "Test";
        textData[i+1] = "Tes";
        textData[i+2] = "T";
        ctr++;
        i = i + 2;
    }
    
    BufferedWriter BW = new BufferedWriter(new FileWriter(fn));
    int j = 0;
    for (String s:  textData) {
        BW.write(textData[j] + "\n");
        System.out.println("done");
    }
    BW.close();
}

}

Answer 1

对您提供的代码进行了一些更改。

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
public class test3 {
public static void main(String[] args) throws IOException {
    int ctr = 1;
    int count = 10;
    // Random r = new Random();     // not used by program, maybe it will later
    String[] textData = new String[count*3];
    
    String storeFile = "testComplete";
    String fn = "C:\Users\13023\eclipse-workspace\test\src\testprac\" + storeFile;
    for (int i = 0; i < count*3; i++) {
        textData[i] = "Test";
        textData[i+1] = "Tes";
        textData[i+2] = "T";
        ctr++;
        i = i + 2;
    }
    
    BufferedWriter BW = new BufferedWriter(new FileWriter(fn));
    //int j = 0;   not used.
    for (String s:  textData) {
        // ******* modified  *******
        BW.write(s);    // textData[j] + "
");  write the strings in the array
    }
    BW.close();
    System.out.println("done");
}