Given an array and a key, the task is to remove all occurrences of the specified key from the array in Java. Examples:Input: array = { 3, 9, 2, 3, 1, 7, 2, 3, 5 }, key = 3Output: [9, 2, 1, 7, 2, 5]

Here is a step-by-step guide on how to remove all occurrences of a specified key from an array in Java:

1. Import the ArrayList class from the java.util package.

import java.util.ArrayList;

2. Create an ArrayList and add elements to it. In this case, we are adding the elements of the array.

ArrayList<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < array.length; i++) {
    list.add(array[i]);
}

3. Use the removeIf() method from the ArrayList class to remove all occurrences of the key. This method removes all of the elements of this collection that satisfy the given predicate.

list.removeIf(n -> (n == key));

4. Print the updated ArrayList.

System.out.println(list);

Here is the complete code:

import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        int[] array = { 3, 9, 2, 3, 1, 7, 2, 3, 5 };
        int key = 3;

        ArrayList<Integer> list = new ArrayList<Integer>();
        for (int i = 0; i < array.length; i++) {
            list.add(array[i]);
        }

        list.removeIf(n -> (n == key));

        System.out.println(list);
    }
}

When you run this code, it will print: [9, 2, 1, 7, 2, 5]

Here is a step-by-step guide on how to remove all occurrences of a specified key from an array in Java:

1. Import the ArrayList class from the java.util package.

import java.util.ArrayList;

2. Create an ArrayList and add elements to it. In this case, we will add the elements of the array.

ArrayList<Integer> list = new ArrayList<Integer>();
for (int i : array) {
    list.add(i);
}

3. Use the removeIf() method from the ArrayList class to remove all occurrences of the key. This method removes all of the elements of this collection that satisfy the given predicate.

list.removeIf(n -> (n == key));

4. Now, all occurrences of the key have been removed from the ArrayList. If you want to convert the ArrayList back to an array, you can do so using the toArray() method.

Integer[] newArray = list.toArray(new Integer[list.size()]);

5. Print the new array to check the result.

for (int i : newArray) {
    System.out.print(i + " ");
}

Here is the complete code:

import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        int[] array = {3, 9, 2, 3, 1, 7, 2, 3, 5};
        int key = 3;

        ArrayList<Integer> list = new ArrayList<Integer>();
        for (int i : array) {
            list.add(i);
        }

        list.removeIf(n -> (n == key));

        Integer[] newArray = list.toArray(new Integer[list.size()]);

        for (int i : newArray) {
            System.out.print(i + " ");
        }
    }
}

This code will output: 9 2 1 7 2 5, which is the array without the key 3.

Here is a step-by-step guide on how to remove all occurrences of a specified key from an array in Java:

1. Import the ArrayList class from the java.util package.

import java.util.ArrayList;
import java.util.Arrays;

2. Create an ArrayList from the given array.

ArrayList<Integer> list = new ArrayList<>(Arrays.asList(3, 9, 2, 3, 1, 7, 2, 3, 5));

3. Specify the key you want to remove.

Integer key = 3;

4. Use the removeIf() method from the ArrayList class to remove all occurrences of the key. This method removes all elements of the list that satisfy the given predicate.

list.removeIf(n -> (n == key));

5. Print the updated list.

System.out.println(list);

The complete code would look like this:

import java.util.ArrayList;
import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        ArrayList<Integer> list = new ArrayList<>(Arrays.asList(3, 9, 2, 3, 1, 7, 2, 3, 5));
        Integer key = 3;
        list.removeIf(n -> (n == key));
        System.out.println(list);
    }
}

When you run this code, it will print: [9, 2, 1, 7, 2, 5] which is the array after removing all occurrences of the key 3.

Here is a step-by-step guide on how to remove all occurrences of a specified key from an array in Java:

1. Import the ArrayList class from the java.util package.

import java.util.ArrayList;

2. Create an ArrayList and add elements to it. In this case, we will add the elements of the array.

ArrayList<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < array.length; i++) {
    list.add(array[i]);
}

3. Use the removeIf() method from the ArrayList class to remove all occurrences of the key. This method removes all elements of the ArrayList that satisfy the condition provided.

list.removeIf(n -> (n == key));

4. Now, the ArrayList list contains the array without the key. If you want to convert it back to an array, you can do the following:

Integer[] newArray = list.toArray(new Integer[list.size()]);

Here is the complete code:

import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        int[] array = { 3, 9, 2, 3, 1, 7, 2, 3, 5 };
        int key = 3;

        ArrayList<Integer> list = new ArrayList<Integer>();
        for (int i = 0; i < array.length; i++) {
            list.add(array[i]);
        }

        list.removeIf(n -> (n == key));

        Integer[] newArray = list.toArray(new Integer[list.size()]);

        for (Integer i : newArray) {
            System.out.print(i + " ");
        }
    }
}

This program will output: 9 2 1 7 2 5, which is the array without the key 3.

Here is a step-by-step guide on how to remove all occurrences of a specified key from an array in Java:

1. Import the ArrayList class from the java.util package.

import java.util.ArrayList;

2. Create an ArrayList and add elements to it. In this case, we are adding the elements of the array to the ArrayList.

ArrayList<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < array.length; i++) {
    list.add(array[i]);
}

3. Use the removeIf() method from the ArrayList class to remove all occurrences of the key. The removeIf() method takes a predicate (a condition) and removes all elements that satisfy the condition.

list.removeIf(n -> (n == key));

4. Now, the ArrayList list contains the array elements without any occurrences of the key. If you want to convert this ArrayList back to an array, you can do so using the toArray() method.

Integer[] newArray = list.toArray(new Integer[list.size()]);

Here is the complete code:

import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        int[] array = { 3, 9, 2, 3, 1, 7, 2, 3, 5 };
        int key = 3;

        ArrayList<Integer> list = new ArrayList<Integer>();
        for (int i = 0; i < array.length; i++) {
            list.add(array[i]);
        }

        list.removeIf(n -> (n == key));

        Integer[] newArray = list.toArray(new Integer[list.size()]);

        for (Integer i : newArray) {
            System.out.print(i + " ");
        }
    }
}

This program will output: 9 2 1 7 2 5, which is the array without any occurrences of the key 3.