在读取 csv 数据 java 时将 for each 循环转换为 for 循环 java

Question

我有以下代码：

    try (CSVReader reader = new CSVReader(new FileReader(file))) {
            List<String[]> r = reader.readAll();
            r.forEach(x -> System.out.println(Arrays.toString(x)));
        }

Answer 1

    try (CSVReader reader = new CSVReader(new FileReader(file))) {
       List<String[]> r = reader.readAll();
       for(int i =0;i< r.size() ; i++){
           System.out.println(Arrays.toString(r.get(i));
       }
    }

另一个解决方案：

try (CSVReader reader = new CSVReader(new FileReader(file))) {
   List<String[]> r = reader.readAll();
   for(String[] x : r){
       System.out.println(Arrays.toString(x));
   }
}

Answer 2

for (String[] s: r) {
    System.out.println(Arrays.toString(x));
}

在读取 csv 数据 java 时将 for each 循环转换为 for 循环 java

Converting for each loop to for loop java while reading csv data java

java

csv

readfile

csvreader