Java Program to remove white spaces from a string | Java Interview Programmes | Program 3 смотреть онлайн

Explanation:-

Let's go through the process of removing white spaces from a string in a step by step manner:

1. Input String:
You start with an input string that contains spaces, like "This is a sample string".

2. Loop Through Characters:(Using for loop)
You go through each character in the input string one by one.

3. Character Extraction:(using .charAt() method)
For each character, you extract it from the string.

4. Character's ASCII Value:
Find the ASCII value of the character which you are removing(Space and Tab space) . This value is a numerical representation of the character.

5. Check for Space and Tab Space:
You check if the ASCII value corresponds to a space. In ASCII, the value 32 represents a space character and the value 9 represents a Tab space .

6. Remove Spaces and Tab spaces:
If the character is not a space (ASCII value is not 32) and not a Tab space(ASCII value is not 9), you keep that character.

7. Construct Output:
As you go through the string, you construct a new string without the spaces. You add non-space characters to this new string.

8. Final Output:
The new string you've constructed now contains only the characters from the original string, excluding all spaces.

Note:- Java Performs an implicit widening conversion from char to int beacuse char is 16-bit unsigned data type and can be safely promoted to int wihout loss of information.
So, we can directly assign the char value to an int variable without explicit type casting
Ex:- int asciiValue = ch;

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