java - 如何用Java将一维和二维数组写入文本文件

Question

我想将数组的每个元素写入一个文本文件。例如下面将演示得更清楚

String[] Name = {"Eric","Matt","Dave"}

Int[] Scores = {[45,56,59,74],[43,67,77,97],[56,78,98,87]}

double[] average = {45.7,77.3,67.4}

我想要在文本文件中包含以下内容

Student Eric scored 45,56,59,74 with average of 45.7
Student Matt scored 43,67,77,97 with average of 77.3
Student Dave scored 56,78,98,87 with average of 67.4

我创建了输出文件

PrintStream output = new PrintStream(new File("output.txt"));

我使用了for循环

for(int i =0;i<=Name.length;i++){

    output.println("Student  " + Name[i] + " scored " + Scores[i] + " with average of " + average[i]);
}

但这并没有奏效。请帮忙。

Answer 1

我的猜测是编译器不喜欢这一行:

Int[] Scores = {[45,56,59,74],[43,67,77,97],[56,78,98,87]}

Java 中没有 Int 类型。假设您的意思是 int，编译器仍然会提示，因为 [45,56,59,74] 不是 int!

您需要的是一个 int[][] 和一个声明，例如:{{45,56,59,74}}

不过，我不确定您会对输出感到满意...