如何将字符串拆分为二维数组并基于行访问每个分组？

我想知道如何分离字符串并将其自动分配给2d数组的特定行，其方式与下面实例化单维数组的方式相同：

public class TestArray { public static void main (String [] args) { String file1description= "We went to the mall yesterday."; String[] file1tags; String delimiter= " "; file1tags = file1description.split (delimiter); for (int i = 0; i < file1tags.length; i++) { System.out.println (file1tags[i]); } } } 

如果有更简单的方法请分享。 你可以告诉我，我是一个相当新手，但我愿意学习。 在此示例中，每个单词由分隔符分隔并自动存储到“file1tags”数组中。 如何使用2d数组执行此操作，以便可以调用具有相同function的多个数组？ 提前致谢！

Answer 1

 public static String [][] to2dim (String source, String outerdelim, String innerdelim) { String [][] result = new String [source.replaceAll ("[^" + outerdelim + "]", "").length () + 1][]; int count = 0; for (String line : source.split ("[" + outerdelim + "]")) { result [count++] = line.split (innerdelim); } return result; } public static void show (String [][] arr) { for (String [] ar : arr) { for (String a: ar) System.out.print (" " + a); System.out.println (); } } public static void main (String args[]) { show (to2dim ("abc \ndef \nghi", "\n", " ")); } 

新手友好：

 public static String [][] to2dim (String source, String outerdelim, String innerdelim) { // outerdelim may be a group of characters String [] sOuter = source.split ("[" + outerdelim + "]"); int size = sOuter.length; // one dimension of the array has to be known on declaration: String [][] result = new String [size][]; int count = 0; for (String line : sOuter) { result [count] = line.split (innerdelim); ++count; } return result; } 

Answer 2

这是一个简单的例子

 String example = "abc \ndef \nghi"; String[] rows = example.split("\n"); for (int i = 0; i < rows.length; i++) { String[] columns = rows[i].split(" "); for (int j = 0; j < columns.length; j++) { //do something } } 

Answer 3

 String example = "abc \ndef \nghi"; String[] rows = example.split("\n"); String[][] table; for (int i = 0; i < rows.length; i++) { table[i] = rows[i].split(" "); }