I got this method that encrypts and decrypts text. All of it works fine, except when it comes to spaces. It doesn't convert the spaces correct. If you take a look at it, you might understand.

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import java.util.*;
 
public class CustomCypher
{
	public String encryptText(String key, String text)
	{
		long finalKey = 0;
		for (int i=0; i<key.length(); i++)
		{
			long tempKey = key.charAt(i);
			tempKey *= 128;
			finalKey += tempKey;
		}
 
		Random generator = new Random(finalKey);
		String returnString = "";
		for (int i=0; i<text.length(); i++)
		{
			int temp = (int)text.charAt(i);
			temp += generator.nextInt(95);
			if (temp > 126)
			{
				temp -= 95;
			}
			returnString += (char)temp;
		}
 
		return returnString;
	}
	public String decryptText(String key, String text)
	{
		long finalKey = 0;
		for (int i=0; i<key.length(); i++)
		{
			long tempKey = key.charAt(i);
			tempKey *= 128;
			finalKey += tempKey;
		}
 
		Random generator = new Random(finalKey);
		String returnString = "";
		for (int i=0; i<text.length(); i++)
		{
			int temp = (int)text.charAt(i);
			temp -= generator.nextInt(95);
			if (temp < 36)
			{
				temp+= 95;
			}
			else if (temp > 126)
			{
				temp -= 95;
			}
			returnString += (char)temp;
		}
 
		return returnString;
	}
}

import java.util.*; public class CustomCypher { public String encryptText(String key, String text) { long finalKey = 0; for (int i=0; i<key.length(); i++) { long tempKey = key.charAt(i); tempKey *= 128; finalKey += tempKey; } Random generator = new Random(finalKey); String returnString = ""; for (int i=0; i<text.length(); i++) { int temp = (int)text.charAt(i); temp += generator.nextInt(95); if (temp > 126) { temp -= 95; } returnString += (char)temp; } return returnString; } public String decryptText(String key, String text) { long finalKey = 0; for (int i=0; i<key.length(); i++) { long tempKey = key.charAt(i); tempKey *= 128; finalKey += tempKey; } Random generator = new Random(finalKey); String returnString = ""; for (int i=0; i<text.length(); i++) { int temp = (int)text.charAt(i); temp -= generator.nextInt(95); if (temp < 36) { temp+= 95; } else if (temp > 126) { temp -= 95; } returnString += (char)temp; } return returnString; } }