How to Iterate over a Two Dimensional Vector in Java - Step by Step Examples

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How to Iterate over a Two Dimensional Vector in Java ?

Answer

To iterate over a two-dimensional vector in Java using java.util.Vector, you can use nested loops.

✐ Examples

1 Iterate over a Numeric Two-Dimensional Vector

In this example,

We use nested for loops to iterate over each element of the two-dimensional vector.
The outer loop iterates over the rows, and the inner loop iterates over the columns.
Finally, we print each element of the two-dimensional vector to standard output.

Java Program

import java.util.Vector;

public class Main {
    public static void main(String[] args) {
        // Step 1: Iterate over a numeric two-dimensional vector
        Vector<Vector<Integer>> matrix = new Vector<>();
        matrix.add(new Vector<>(Arrays.asList(1, 2, 3)));
        matrix.add(new Vector<>(Arrays.asList(4, 5, 6)));
        matrix.add(new Vector<>(Arrays.asList(7, 8, 9)));
        
        // Step 2: Nested loops to print each element
        for (Vector<Integer> row : matrix) {
            for (Integer num : row) {
                System.out.print(num + " ");
            }
        }
    }
}

Output

1 2 3 4 5 6 7 8 9

2 Iterate over a String Two-Dimensional Vector

In this example,

We use nested for loops to iterate over each element of the two-dimensional vector.
The outer loop iterates over the rows, and the inner loop iterates over the columns.
Finally, we print each element of the two-dimensional vector to standard output.

Java Program

import java.util.Vector;

public class Main {
    public static void main(String[] args) {
        // Step 1: Iterate over a string two-dimensional vector
        Vector<Vector<String>> matrix = new Vector<>();
        matrix.add(new Vector<>(Arrays.asList("a", "b", "c")));
        matrix.add(new Vector<>(Arrays.asList("d", "e", "f")));
        matrix.add(new Vector<>(Arrays.asList("g", "h", "i")));
        
        // Step 2: Nested loops to print each element
        for (Vector<String> row : matrix) {
            for (String str : row) {
                System.out.print(str + " ");
            }
        }
    }
}

Output

a b c d e f g h i

Summary

In this tutorial, we learned How to Iterate over a Two Dimensional Vector in Java language with well detailed examples.

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How to Iterate over a Two Dimensional Vector in Java - Step by Step Examples

How to Iterate over a Two Dimensional Vector in Java ?

Answer

✐ Examples

1 Iterate over a Numeric Two-Dimensional Vector

Java Program

Output

2 Iterate over a String Two-Dimensional Vector

Java Program

Output

Summary

More Java Vectors Tutorials