I am trying to make this input.txt into a 2D array. I tried a few different methods. This is my latest attempt, and I seem to be stuck here... Any help is much appreciated.
input.txt structure: SCI2000/Science/1200/10/C --> There are 23 rows and 5 columns. I'd also like to have a title made for each column.
FileReader fr = new FileReader("input.txt");
BufferedReader br = new BufferedReader(fr);
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
sb.append(System.lineSeparator());
line = br.readLine();
}
String everything = sb.toString();
String[][] input = new String[23][5];
String[] tokens = everything.split("/");
for(String str : tokens)
System.out.print(str);
Just the main processing part (not tested):
int columns = 5;
String[] row = String[columns];
int j = 0;
while ((line = br.readline) != null) {
row = line.split("/");
for(int i=0; i<row.length; ++i) {
input[j,i] = row(i);
}
++j;
}
FileReader fr = new FileReader("input.txt");
BufferedReader br = new BufferedReader(fr);
String[][] input = new String[24][5]; // 1 row for title, 23 rows for data
// add title
input[0] = new String[]{"title1", "title1", "title1", "title1", "title1"};
String line = br.readLine();
int row = 1; // update here
while ( (line = br.readLine())!= null ) {
input[row++] = line.split("/");
}
// print all data
for ( int i = 0; i < input.length; i++) {
for ( int j = 0; j < input[i].length; j++ )
System.out.print(input[i][j] + " ");
//new line
System.out.println();
}
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