Java Program to Iterate through each character of the string.

In this article, we will understand how to iterate through each character of the string. String is a datatype that contains one or more characters and is enclosed in double quotes (“ ”). Char is a datatype that contains an alphabet or an integer or a special character.

Below is a demonstration of the same −

Suppose our input is

The string is defined as: Java Program

The desired output would be

The characters in the string are:
J, a, v, a, , P, r, o, g, r, a, m,

Algorithm

Step 1 - START
Step 2 - Declare a string namely input_string, a char namely temp.
Step 3 - Define the values.
Step 4 - Iterate over the string, print each character at index ‘i’ of the string along with a blank space.
Step 5 - Display the result
Step 6 - Stop

Example 1

Here, for-loop.

public class Characters {
public static void main(String[] args) {
String input_string = "Java Program";
System.out.println("The string is defined as: " +input_string);
System.out.println("The characters in the string are: ");
for(int i = 0; i<input_string.length(); i++) {
char temp = input_string.charAt(i);
System.out.print(temp + ", ");
}
}
}

Output

The string is defined as: Java Program
The characters in the string are:
J, a, v, a, , P, r, o, g, r, a, m,

Example 2

Here, for-each loop.

public class Main {
public static void main(String[] args) {
String input_string = "Java Program";
System.out.println("The string is defined as: " +input_string);
System.out.println("The characters in the string are: ");
for(char temp : input_string.toCharArray()) {
System.out.print(temp + ", ");
}
}
}

Output

The string is defined as: Java Program
The characters in the string are:
J, a, v, a, , P, r, o, g, r, a, m,