space added in utilmethods.java

src/util/UtilMethods.java

@@ -27,7 +27,7 @@ public static String getFileData(String fname) {
         }
         catch(Exception e) {
             throw new RuntimeException("ERROR: File operation [email protected]_getFileData()");
-            //System.out.println("ERROR: File operation [email protected]_getFileData()");
+            //System.out.println("ERROR: File operation failed. @UtilMethods.java_getFileData()");
         }
         return text;
     }

src/util/UtilMethods.java~

@@ -0,0 +1,78 @@
+package stegtool.util;
+import java.io.FileInputStream;
+import java.io.File;
+import java.io.InputStream;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.FileWriter;
+import java.io.BufferedWriter;
+import java.awt.Color;
+
+import java.awt.image.BufferedImage;
+import javax.imageio.ImageIO;
+public class UtilMethods {
+
+    //to get contents of a text file
+    public static String getFileData(String fname) {
+        String text = "";
+        int ch;
+        try {
+            InputStream is = new FileInputStream(fname);
+            InputStreamReader isr = new InputStreamReader(is);
+            BufferedReader br = new BufferedReader(isr);
+            while( (ch = br.read()) != -1 ) {
+                 text += ""+(char)ch;
+            }
+        }
+        catch(Exception e) {
+            throw new RuntimeException("ERROR: File operation [email protected]_getFileData()");
+            //System.out.println("ERROR: File operation [email protected]_getFileData()");
+        }
+        return text;
+    }
+
+    public static void setFileData(String name,String data) {
+        try {
+            File file = new File(name);
+            FileWriter fw = new FileWriter(file);
+            BufferedWriter bw = new BufferedWriter(fw);
+            bw.write(data);
+            bw.close();
+        }
+        catch(IOException e) {
+            throw new RuntimeException("\nError: Couldn't write data to file. UtilMethods.java@setFileData().");
+            //System.out.println("\nError: Couldn't write data to file. UtilMethods.java@setFileData().");
+        }
+    }
+
+    //to get binary format of given string
+    public static String textToBinary(String text) {
+        String bin = "";
+        StringBuffer sb = null;
+        for(int i=0;i<text.length();i++) {
+            sb = new StringBuffer(Integer.toBinaryString((int)text.charAt(i)));
+            bin += binaryLeftPadding(sb);
+        }
+        return bin;
+    }
+
+    //to left padding the binary numbers
+    public static String binaryLeftPadding(StringBuffer bin) {
+        while(bin.length() < 8) {
+            bin.insert(0,"0");
+        }
+        return bin.toString();
+    }
+
+    //to get text from given binary
+    public static String binaryToText(String bin) {
+        String text = null;
+        for(int i=0;i<bin.length()-8;i+=8) {
+            int chr = Integer.parseInt(bin.substring(i,i+8),2);
+            text += (char)chr;
+            if(text.contains("~~~")) break;
+        }
+        return text;
+    }   
+}