String array in java using for loop javatpoint

String array in java using for loop javatpoint

I'm happy to help!

In Java, a string array is an array that stores strings as elements. You can create a string array using a for loop and populate it with desired strings.

Here's an example:

public class StringArrayExample {
public static void main(String[] args) {
// Declare the array size
int size = 5;
// Initialize the array
String[] stringArray = new String[size];
// Use a for loop to populate the array
for (int i = 0; i < size; i++) {
stringArray[i] = "String " + (i+1);
}
// Print the array elements
for (int i = 0; i < size; i++) {
System.out.println("Index " + i + ": " + stringArray[i]);
}
}
}

In this example, we first declare an integer variable size to define the number of strings in our array. Then, we create a new String[] called stringArray with that size.

Next, we use a for loop to populate the array. Inside the loop, we assign a string value to each element of the array using the indexing operator []. We're creating strings like "String 1", "String 2", etc.

Finally, we print out each element in the array using another for loop. This way, you can access and manipulate individual elements in your string array.

Some benefits of using a for loop to create a string array:

However, there are also some potential drawbacks:

In summary, a for loop is a great way to create a string array in Java when you want to have fine-grained control over how you initialize the array.

How to use for-each loop in Java for string array?

I'd be happy to help you with that!

In Java, the for-each loop is used to iterate over a collection of objects such as arrays or Lists. To use it on a String array, you can follow these steps:

Step 1: Create a string array

First, create an array of strings that you want to iterate over:

String[] myArray = {"Hello", "World", "Java", "Programming"};

Step 2: Define the loop

Next, define your for-each loop:

for (String s : myArray) {
// Your code here
}

Here, s is a variable that takes on the value of each string in the array during iteration.

Step 3: Use the loop variables

Inside the loop, you can use the s variable to access and manipulate each string in the array:

for (String s : myArray) {
System.out.println(s); // Print each string
// or do something like this...
String reversed = new StringBuilder(s).reverse().toString();
System.out.println(reversed);
}

Example Usage

Here's an example of using the for-each loop to iterate over a string array and print each string, along with its reverse:

public class ForEachLoop {
public static void main(String[] args) {
String[] myArray = {"Hello", "World", "Java", "Programming"};
for (String s : myArray) {
System.out.println("Original: " + s);
String reversed = new StringBuilder(s).reverse().toString();
System.out.println("Reversed: " + reversed);
}
}
}

When you run this program, it will print:

Original: Hello
Reversed: olleH
Original: World
Reversed: dlroW
Original: Java
Reversed: avaj
Original: Programming
Reversed: gnimmargorp

In summary, to use a for-each loop on a String array in Java:

I hope this helps! Let me know if you have any further questions.