java - 如何将字符串拆分为列

Question

我有一个单列字符串列表。我想从这些字符串中创建三列，然后将输出打印到另一个文件。我该怎么做？

这是我迄今为止尝试过的:

ArrayList<String> list=new ArrayList<String>();
File file = new File("f://file.txt");

try {
    Scanner scanner = new Scanner(file);

    while (scanner.hasNextLine()) {
        String line = scanner.nextLine();
        System.out.println(line);
    }

    scanner.close();
} catch (FileNotFoundException e) {
    e.printStackTrace();
}

我的输入数据:

City
Gsk
Relocation
sripallu
here
jrajesh
gurgaon
unitech
StatisticsThreads
WizOty
LTDParsvnathK
Quotesby
newest
PMaashuktr

我的预期输出:

City      Gsk      Relocation
sripallu here      jrajesh
gurgaon  unitech   StatisticsThreads
WizOty   LTDParsvnathK  Quotesby
newest   PMaashuktr      Loans
.
.
.
.
.
.
.

Answer 1

您可以在类里面构建您的需求，例如输出，并列出输出列表。

public class Output{
   private String str1;
   private String str2;
   private String str3;
   <geter & setter method>
}

...

ArrayList<Output> list=new ArrayList<Output>();
int i=-1; Output op =null;
while (scanner.hasNextLine()) {
     String line = scanner.nextLine();i = ++i%3;
     if(i==0){
        op = new Output();
        op.setStr1(line);
     }else if(i==1)
        op.setStr2(line);
     else
        op.setStr3(line);
}