/Java/How to get the dimensions of a 2d array in java

How to get the dimensions of a 2d array in java

public class Main {
  public static void main(String[] args) {
    int[][] test = new int[10][4];
    int rows = test.length;
    int coloumns = test[0].length;
    System.out.println(rows);
    System.out.println(coloumns);
  }
}

Java length of matrix

public static void main(String[] args) {

    int[][] foo = new int[][] {
        new int[] { 1, 2, 3 },
        new int[] { 1, 2, 3, 4},
    };

    System.out.println(foo.length); //2
    System.out.println(foo[0].length); //3
    System.out.println(foo[1].length); //4
}

2d array length in java

public static void main(String[] args) {

    int[][] foo = new int[][] {
        new int[] { 1, 2, 3 },
        new int[] { 1, 2, 3, 4},
    };

    System.out.println(foo.length); //2 // gives count of rows
    System.out.println(foo[0].length); //3 // gives count of columns for particular row
    System.out.println(foo[1].length); //4
}

Source: stackoverflow.com

Similar codes

1 vote202 views4 answers
How to compare strings without capital letters in java easy
Java
1 vote212 views1 answer
Set remove element java
Java
0 vote195 views1 answer
Running Sum of 1d Array Leetcode
Java
0 vote213 views1 answer
Android get user defined device name programmatically
Java
3 votes199 views1 answer
Java extends
Java
0 vote189 views1 answer
Java program to print decimal to octal conversion
Java
1 vote216 views1 answer
Java convert java.util.Date to LocalDate
Java
0 vote206 views1 answer
Hackerrank valid username regular expression
Java
5 votes263 views3 answers
Java remove space at the end of string
Java
0 vote211 views1 answer
Destory fragment
Java