[英]BufferedWriter array elements in new line
looked through a lot of similar subjects, couldn't find something that works for me :/ 看了很多类似的主题,找不到适合我的东西:/
All I want to do is to write every element of an array to a text file. 我要做的就是将数组的每个元素写入文本文件。
Arrays.toString(array);
That code gives me every element in one line and also brackets around the whole list of elements. 该代码使我在一行中包含所有元素,并在整个元素列表中加上了括号。 Thats not what I want.
那不是我想要的。
The elements of the array are only text. 数组的元素仅是文本。 For example: this is a test this is testline number 2
例如:这是一个测试,这是2号测试线
The array here is btw already a string array. 这里的数组是btw已经是字符串数组。 String[] array = new String[5];
String [] array = new String [5];
My code so far is following: 到目前为止,我的代码如下:
public void dateiausgeben() throws NullPointerException {
try {
FileWriter fw = new FileWriter("neueDatei.txt");
BufferedWriter bw = new BufferedWriter(fw);
for (int i = 0; i < array.length;i++) {
//String str = array[i].toString();
//System.out.println("array 0 ="+array[0]+"\n array 1 ="+array[1]+"\n array 2= "+array[2]+"\n array 3="+array[3]);
bw.write(array[i].toString());
}
bw.close();
}
catch (IOException e){
e.printStackTrace();
}
}
I tried also other stuff out. 我也尝试了其他东西。 I also want to keep it as simple as possible.
我也想使它尽可能简单。
Stack Trace 堆栈跟踪
Exception in thread "main" java.lang.NullPointerException
at java.io.Writer.write(Unknown Source)
at Kapitel3_3.readfile.dateiausgeben(readfile.java:61)
at Kapitel3_3.DateiKopierer.main(DateiKopierer.java:15)
bw.write(array[i].toString());
Change that to 更改为
bw.write(array[i]);
and add 并添加
bw.newLine();
after that. 之后。
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