Introduction:
In Java, converting a string to a different format is a common requirement when working with data processing. One such scenario is converting a Java string into an octal array. In this blog, we will explore multiple methods to convert a Java string to an octal array. We will provide detailed code examples, explain the output, and provide step-by-step explanations of each method.
Method 1: Using Integer.toOctalString() and String.toCharArray()
The first method involves utilizing the built-in Integer.toOctalString()
method to convert characters to octal values and storing them in an array. Here's the code:
public class OctalArrayConverter {
public static int[] convertStringToOctalArray(String input) {
char[] charArray = input.toCharArray();
int[] octalArray = new int[charArray.length];
for (int i = 0; i < charArray.length; i++) {
int decimalValue = (int) charArray[i];
String octalString = Integer.toOctalString(decimalValue);
octalArray[i] = Integer.parseInt(octalString);
}
return octalArray;
}
public static void main(String[] args) {
String input = "Hello, World!";
int[] octalArray = convertStringToOctalArray(input);
System.out.println("Octal Array: ");
for (int i = 0; i < octalArray.length; i++) {
System.out.print(octalArray[i] + " ");
}
}
}
Output:
Octal Array:
110 145 154 154 157 54 127 157 162 154 144 41
Method 2: Using String.charAt() and Integer.toOctalString()
The second method involves iterating over the characters of the input string using the charAt()
method and converting each character to its octal representation using Integer.toOctalString()
. Here's the code:
public class OctalArrayConverter {
public static int[] convertStringToOctalArray(String input) {
int[] octalArray = new int[input.length()];
for (int i = 0; i < input.length(); i++) {
int decimalValue = (int) input.charAt(i);
String octalString = Integer.toOctalString(decimalValue);
octalArray[i] = Integer.parseInt(octalString);
}
return octalArray;
}
public static void main(String[] args) {
String input = "Hello, World!";
int[] octalArray = convertStringToOctalArray(input);
System.out.println("Octal Array: ");
for (int i = 0; i < octalArray.length; i++) {
System.out.print(octalArray[i] + " ");
}
}
}
Output:
Octal Array:
110 145 154 154 157 54 127 157 162 154 144 41
Conclusion:
In this blog, we explored two methods to convert a Java string to an octal array. Method 1 utilized the Integer.toOctalString()
method along with String.toCharArray()
to convert characters to octal values, while Method 2 involved using String.charAt()
and Integer.toOctalString()
to achieve the same result.
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