java - Java中的变量文件名

Question

有什么方法可以在每次循环时更改文件名吗？假设我有以下示例代码:

while(somecondition) {    
    try (PrintWriter w = new PrintWriter("output.txt", "UTF-8");){
        w.println("Bye World");
    } 
}

现在我想在每次循环再次开始时将output.txt的名称更改为output++.txt。

我现在会收到:

output1.txt
output2.txt
output3.txt
outputn.txt

Answer 1

您可以使用for循环:

for (int i = 1; i <= n && someCondition; i++) {    
    try (PrintWriter w = new PrintWriter("output" + i + ".txt", "UTF-8");){
        w.println("Bye World");
    } 
}