Arrays.toString() in Java with Examples

import java.util.Arrays;

public class ArrayToString {
    public static void main(String[] args) {
        
        // create an integer array
        int[] n = {1, 2, 3, 4,};

        // print the array using 
        // Arrays.toString()
        System.out.println(Arrays.toString(n));
    }
}

// Java program to demonstrate 
// working of Arrays.toString()
// with primitive arrays
import java.util.Arrays;

class GFG {
    public static void main(String[] args) {
        
        // create different types of arrays and
        // print their contents using Arrays.toString()
        boolean[] arr1 = new boolean[] { true, true, false, true };
        byte[] arr2 = new byte[] { 10, 20, 30 };
        char[] arr3 = new char[] { 'g', 'e', 'e', 'k', 's' };
        double[] arr4 = new double[] { 1, 2, 3, 4 };
        float[] arr5 = new float[] { 1, 2, 3, 4 };
        int[] arr6 = new int[] { 1, 2, 3, 4 };
        long[] arr7 = new long[] { 1, 2, 3, 4 };
        Object[] arr8 = new Object[] { 1, 2, 3, 4 };
        short[] arr9 = new short[] { 1, 2, 3, 4 };

        System.out.println(Arrays.toString(arr1));
        System.out.println(Arrays.toString(arr2));
        System.out.println(Arrays.toString(arr3));
        System.out.println(Arrays.toString(arr4));
        System.out.println(Arrays.toString(arr5));
        System.out.println(Arrays.toString(arr6));
        System.out.println(Arrays.toString(arr7));
        System.out.println(Arrays.toString(arr8));
        System.out.println(Arrays.toString(arr9));
    }
}

// Java program to demonstrate 
// working of Arrays.toString()
// for user defined objects
import java.util.Arrays;

class Main {
    public static void main(String[] args) {
        
      Student[] arr = { new Student(1, "a", "UP"),
                        new Student(2, "b", "MP"),
                        new Student(3, "c", "Delhi") };

        System.out.println(Arrays.toString(arr));
    }
}

// class to represent a student
class Student {
  
    // instance variables
    int r;
    String n, a;

    // Constructor
    public Student(int r, String n, String a)
    {
        this.r = r;
        this.n = n;
        this.a = a;
    }

    // Overriding the toString() method to return 
    // student details in a formatted string
    @Override
    public String toString()
    {
         return "Roll No: " + this.r + ", Name: " + this.n + ", Address: " + this.a;
    }
}