Beta 1.2, adds Procyon and CFR Decompilers

Beta 1.2, adds Procyon and CFR Decompilers

src/me/konloch/kontainer/io/DiskReader.java

@@ -49,6 +49,23 @@ public class DiskReader {
 		
 	}
 	
+	/**
+	 * Used to load from file
+	 */
+	public synchronized static String loadAsString(String fileName) throws Exception {
+		String s = "";
+
+		BufferedReader reader = new BufferedReader(new FileReader(new File(fileName)));
+		String add;
+			
+		while((add = reader.readLine()) != null)
+			s += add + System.getProperty("line.separator");
+		
+		reader.close();
+		
+		return s;
+	}
+	
 	/**
 	 * Used to load a string via line number
 	 * lineNumber = -1 means random.

src/the/bytecode/club/bytecodeviewer/BytecodeViewer.java

@@ -114,6 +114,7 @@ import the.bytecode.club.bytecodeviewer.plugins.PluginManager;
  * 10/16/2014 - Now if you try search with an empty string, it won't search.
  * 10/16/2014 - Added Replace Strings plugin.
  * 10/16/2014 - Added a loading icon that displays whenever a background task is being executed.
+ * 10/19/2014 - Fixed harcoded \\.
  * 
  * @author Konloch
  *
@@ -130,6 +131,8 @@ public class BytecodeViewer {
     private static ArrayList<String> recentPlugins = DiskReader.loadArrayList(pluginsName, false);
 	private static int maxRecentFiles = 25;
 	public static String tempDirectory = "bcv_temp";
+	public static  String fs = System.getProperty("file.separator");
+	public static  String nl = System.getProperty("line.separator");
 	
 	public static void main(String[] args) {
 		cleanup();
@@ -313,11 +316,19 @@ public class BytecodeViewer {
 	public static void cleanup() {
 		tempF = new File(tempDirectory);
 		try {
+			Thread.sleep(100);
 			FileUtils.deleteDirectory(tempF);
-		} catch (IOException e) {
-			e.printStackTrace();
+			Thread.sleep(100);
+		} catch (Exception e) {
+		}
+		
+		while(!tempF.exists()) { //keep making dirs
+			try {
+				tempF.mkdir();
+				Thread.sleep(100);
+			} catch (Exception e) {
+			}
 		}
-		tempF.mkdir();
 	}
 	
 	private static String quickConvert(ArrayList<String> a) {

src/the/bytecode/club/bytecodeviewer/ZipUtils.java

@@ -0,0 +1,188 @@
+package the.bytecode.club.bytecodeviewer;
+
+import java.io.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+import java.util.zip.ZipOutputStream;
+
+import javax.swing.filechooser.FileFilter;
+
+/**
+ * Rudimentary utility class for Zip archives creation.
+ */
+public final class ZipUtils {
+
+    private static final String ZIP_FILE_EXTENSION = ".zip";
+    private static final FileFilter ZIP_FILE_FILTER = new FileFilter() {
+
+        @Override
+        public boolean accept(File pathname) {
+            return pathname.getName().endsWith(ZIP_FILE_EXTENSION);
+        }
+
+		@Override
+		public String getDescription() {
+			// TODO Auto-generated method stub
+			return null;
+		}
+    };
+
+    private ZipUtils() {
+        // Utility class, cannot be instantiated.
+    }
+
+    /**
+     * Compress the given root and all its underlying folders and files to the target file, preserving files hierarchy.
+     * 
+     * @param root
+     *            The root of the Zip archive
+     * @param target
+     *            The target archive file (must be a valid Zip file name)
+     * @throws IOException
+     *             If an error occurs during the process
+     */
+    public static void zipDirectory(final File root, final File target) throws IOException {
+        if (!ZIP_FILE_FILTER.accept(target)) {
+            throw new IllegalArgumentException("Target file " + target.getName() + " is not a valid Zip file name");
+        }
+
+        byte[] buffer = new byte[1024];
+        FileOutputStream fileOutputStream = null;
+        ZipOutputStream zipOutputStream = null;
+
+        try {
+            fileOutputStream = new FileOutputStream(target);
+            zipOutputStream = new ZipOutputStream(fileOutputStream);
+
+            FileInputStream fileInputStream = null;
+
+            for (File file : ZipUtils.listFilesRecursive(root)) {
+                ZipEntry entry = new ZipEntry(ZipUtils.stripRootInclusive(file, root).getPath());
+                zipOutputStream.putNextEntry(entry);
+                try {
+                    fileInputStream = new FileInputStream(file);
+                    int length;
+                    while ((length = fileInputStream.read(buffer)) > 0) {
+                        zipOutputStream.write(buffer, 0, length);
+                    }
+                } finally {
+                    fileInputStream.close();
+                }
+
+                zipOutputStream.closeEntry();
+            }
+        } finally {
+            zipOutputStream.close();
+        }
+    }
+
+    /**
+     * Unzip the given archive Zip file to the target location. If target location is a file, the extraction will be
+     * performed in the same directory of this target file.
+     * 
+     * @param zipFile
+     *            The Zip archive file
+     * @param target
+     *            The target location
+     * @throws IOException
+     *             If an error occurs during the process
+     */
+    public static void unzip(final File zipFile, File target) throws IOException {
+        if (zipFile == null) {
+            throw new IllegalArgumentException("Cannot unzip a null file!");
+        } else if (!ZIP_FILE_FILTER.accept(zipFile)) {
+            throw new IllegalArgumentException("Given archive is not a valid Zip file!");
+        }
+        if (target == null) {
+            throw new IllegalArgumentException("Cannot unzip to a null target!");
+        }
+
+        byte[] buffer = new byte[1024];
+
+        if (!target.exists()) {
+            target.mkdir();
+        } else if (target.isFile()) {
+            // Target is a file, will try to unzip in the same folder.
+            target = target.getParentFile();
+            if (target == null) {
+                throw new IllegalArgumentException("Target is a file and has no parent!");
+            }
+        }
+
+        ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(zipFile));
+        try {
+            for (ZipEntry entry = zipInputStream.getNextEntry(); entry != null; entry = zipInputStream.getNextEntry()) {
+                File file = new File(target, entry.getName());
+
+                // Create parent folders (folders are not in the Zip entries).
+                new File(file.getParent()).mkdirs();
+
+                FileOutputStream fileOutputStream = new FileOutputStream(file);
+                try {
+                    int length;
+                    while ((length = zipInputStream.read(buffer)) > 0) {
+                        fileOutputStream.write(buffer, 0, length);
+                    }
+                } finally {
+                    fileOutputStream.close();
+                }
+                zipInputStream.closeEntry();
+            }
+        } finally {
+            zipInputStream.close();
+        }
+
+    }
+
+    /**
+     * List all files and folders from the given root.
+     * 
+     * @param root
+     *            The root of the listing
+     * @return A list of the files under the given root
+     */
+    public static List<File> listFilesRecursive(final File root) {
+        List<File> packedFiles = new ArrayList<File>();
+
+        File[] subFiles = root.listFiles();
+        if (subFiles == null) {
+            return packedFiles;
+        }
+
+        for (File file : subFiles) {
+            if (file.isFile()) {
+                File packedFile = new File(root, file.getName());
+                packedFiles.add(packedFile);
+            } else if (file.isDirectory()) {
+                packedFiles.addAll(ZipUtils.listFilesRecursive(file));
+            }
+        }
+
+        return packedFiles;
+    }
+
+    /**
+     * Strip the given file from any parent path, preserving the root as the absolute parent.
+     * <p>
+     * Ex. with 'Folder' as the root: /home/johnj/Test/Folder/File.txt => /Folder/File.txt
+     * </p>
+     * 
+     * @param file
+     *            The file to strip
+     * @param root
+     *            The root of the stripping
+     * @return The stripped file
+     */
+    private static File stripRootInclusive(final File file, final File root) {
+        String parentPath = root.getParent();
+
+        if (parentPath == null) {
+            // Assuming no existing parent.
+            return file;
+        }
+
+        return new File(file.getAbsolutePath().substring(parentPath.length()));
+    }
+}

src/the/bytecode/club/bytecodeviewer/decompilers/java/CFRDecompiler.java

@@ -0,0 +1,105 @@
+package the.bytecode.club.bytecodeviewer.decompilers.java;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.Random;
+
+import me.konloch.kontainer.io.DiskReader;
+
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.tree.ClassNode;
+
+import the.bytecode.club.bytecodeviewer.BytecodeViewer;
+import the.bytecode.club.bytecodeviewer.JarUtils;
+
+public class CFRDecompiler extends JavaDecompiler {
+
+	@Override
+	public String decompileClassNode(ClassNode cn) {
+        final ClassWriter cw = new ClassWriter(0);
+        cn.accept(cw);
+        
+        String fileStart = BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp";
+        int fileNumber = getClassNumber(fileStart, ".class");
+        
+        final File tempClass = new File(fileStart+fileNumber+".class");
+        
+        try {
+            final FileOutputStream fos = new FileOutputStream(tempClass);
+            
+            fos.write(cw.toByteArray());
+            
+            fos.close();
+        } catch (final IOException e) {
+            e.printStackTrace();
+        }
+
+        String fuckery = fuckery(fileStart);
+        org.benf.cfr.reader.Main.main(generateMainMethod(tempClass.getAbsolutePath(), fuckery));
+        
+        tempClass.delete();
+        
+
+        for(File outputJava : new File(fuckery).listFiles()) {
+        	String s;
+			try {
+				s = DiskReader.loadAsString(outputJava.getAbsolutePath());
+	        	
+	            outputJava.delete();
+	            
+	            return s;
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+        }
+        return "CFR error! Send the stacktrace to Konloch at http://the.bytecode.club or konloch@gmail.com";
+	}
+	
+	Random r = new Random();
+	File f;
+	public String fuckery(String start) {
+		boolean b = false;
+		while(!b) {
+			f = new File(start+r.nextInt(Integer.MAX_VALUE));
+			if(!f.exists())
+				return f.toString();
+		}
+		
+		return null;
+	}
+	
+	public String[] generateMainMethod(String filePath, String outputPath) {
+		return new String[] {
+			filePath,
+			"--outputdir",
+			outputPath
+		};
+	}
+
+	@Override
+	public void decompileToZip(String zipName) {
+		/*
+		File tempZip = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp.jar");
+		if(tempZip.exists())
+			tempZip.delete();
+		
+		JarUtils.saveAsJar(BytecodeViewer.getLoadedClasses(), tempZip.getAbsolutePath());
+		
+
+        String fileStart = BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp";
+        
+		
+        String fuckery = fuckery(fileStart);
+        org.benf.cfr.reader.Main.main(generateMainMethod(tempZip.getAbsolutePath(), fuckery));
+
+        tempZip.delete();
+
+        for(File f : new File(fuckery).listFiles()) {
+        	//put contents into a zipfile
+        }*/
+		BytecodeViewer.showMessage("CFRDecompiler currently doesn't decompile as zip, please wait till 1.3 of Bytecode Viewer.");
+
+	}
+
+}

src/the/bytecode/club/bytecodeviewer/decompilers/java/FernFlowerDecompiler.java

@@ -1,11 +1,11 @@
 package the.bytecode.club.bytecodeviewer.decompilers.java;
 
-import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileOutputStream;
-import java.io.FileReader;
 import java.io.IOException;
 
+import me.konloch.kontainer.io.DiskReader;
+
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.tree.ClassNode;
 
@@ -20,8 +20,9 @@ import the.bytecode.club.bytecodeviewer.JarUtils;
  *
  */
 
-public class FernFlowerDecompiler {
+public class FernFlowerDecompiler extends JavaDecompiler {
 	
+	@Override
 	public void decompileToZip(String zipName) {
 		File tempZip = new File(BytecodeViewer.tempDirectory + "temp.zip");
 		if(tempZip.exists())
@@ -30,19 +31,20 @@ public class FernFlowerDecompiler {
 		JarUtils.saveAsJar(BytecodeViewer.getLoadedClasses(), tempZip.getAbsolutePath());
 
         de.fernflower.main.decompiler.ConsoleDecompiler.main(new String[] {tempZip.getAbsolutePath(), BytecodeViewer.tempDirectory + "./temp/"});
-        File tempZip2 = new File(BytecodeViewer.tempDirectory + System.getProperty("file.separator") + "temp" + System.getProperty("file.separator") +tempZip.getName());
+        File tempZip2 = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp" + BytecodeViewer.fs +tempZip.getName());
         if(tempZip2.exists())
         	tempZip2.renameTo(new File(zipName));
         
         tempZip.delete();
-        new File(BytecodeViewer.tempDirectory + System.getProperty("file.separator") + "temp").delete();
+        new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp").delete();
 	}
 
+	@Override
     public String decompileClassNode(final ClassNode cn) {
         final ClassWriter cw = new ClassWriter(0);
         cn.accept(cw);
         
-        String fileStart = BytecodeViewer.tempDirectory + System.getProperty("file.separator") + "temp";
+        String fileStart = BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp";
         int fileNumber = getClassNumber(fileStart, ".class");
         
         final File tempClass = new File(fileStart+fileNumber+".class");
@@ -63,80 +65,40 @@ public class FernFlowerDecompiler {
         
         final File outputJava = new File("temp"+fileNumber+".java");
         if (outputJava.exists()) {
-            
-            final String nl = System.getProperty("line.separator");
-            final StringBuffer javaSrc = new StringBuffer();
-            
-            try {
-                final BufferedReader br = new BufferedReader(new FileReader(outputJava));
-                String line;
-                while ((line = br.readLine()) != null) {
-                    javaSrc.append(line + nl);
-                }
-                br.close();
-            } catch (final IOException e) {
-                e.printStackTrace();
-            }
-            
-            outputJava.delete();
-            
-            return javaSrc.toString();   
+        	String s;
+			try {
+				s = DiskReader.loadAsString(outputJava.getAbsolutePath());
+	        	
+	            outputJava.delete();
+	            
+	            return s;
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
         }
         return "FernFlower error! Send the stacktrace to Konloch at http://the.bytecode.club or konloch@gmail.com";
     }
-    
-    File tempF = null;
-    public int getClassNumber(String start, String ext) {
-    	boolean b = true;
-    	int i = 0;
-    	while(b) {
-    		tempF = new File(start + i + ext);
-    		if(!tempF.exists())
-    			b = false;
-    		else
-    			i++;
-    	}
-    	return i;
-    }
 
     private String[] generateMainMethod(String className, String folder) {
-    	boolean rbr = BytecodeViewer.viewer.rbr.isSelected();
-    	boolean rsy = BytecodeViewer.viewer.rsy.isSelected();
-    	boolean din = BytecodeViewer.viewer.din.isSelected();
-    	boolean dc4 = BytecodeViewer.viewer.dc4.isSelected();
-    	boolean das = BytecodeViewer.viewer.das.isSelected();
-    	boolean hes = BytecodeViewer.viewer.hes.isSelected();
-    	boolean hdc = BytecodeViewer.viewer.hdc.isSelected();
-    	boolean dgs = BytecodeViewer.viewer.dgs.isSelected();
-    	boolean ner = BytecodeViewer.viewer.ner.isSelected();
-    	boolean den = BytecodeViewer.viewer.den.isSelected();
-    	boolean rgn = BytecodeViewer.viewer.rgn.isSelected();
-    	boolean bto = BytecodeViewer.viewer.bto.isSelected();
-    	boolean nns = BytecodeViewer.viewer.nns.isSelected();
-    	boolean uto = BytecodeViewer.viewer.uto.isSelected();
-    	boolean udv = BytecodeViewer.viewer.udv.isSelected();
-    	boolean rer = BytecodeViewer.viewer.rer.isSelected();
-    	boolean fdi = BytecodeViewer.viewer.fdi.isSelected();
-    	boolean asc = BytecodeViewer.viewer.asc.isSelected();
     	return new String[] {
-    			"-rbr="+r(rbr),
-    			"-rsy="+r(rsy),
-    			"-din="+r(din),
-    			"-dc4="+r(dc4),
-    			"-das="+r(das),
-    			"-hes="+r(hes),
-    			"-hdc="+r(hdc),
-    			"-dgs="+r(dgs),
-    			"-ner="+r(ner),
-    			"-den="+r(den),
-    			"-rgn="+r(rgn),
-    			"-bto="+r(bto),
-    			"-nns="+r(nns),
-    			"-uto="+r(uto),
-    			"-udv="+r(udv),
-    			"-rer="+r(rer),
-    			"-fdi="+r(fdi),
-    			"-asc="+r(asc),
+    			"-rbr="+r(BytecodeViewer.viewer.rbr.isSelected()),
+    			"-rsy="+r(BytecodeViewer.viewer.rsy.isSelected()),
+    			"-din="+r(BytecodeViewer.viewer.din.isSelected()),
+    			"-dc4="+r(BytecodeViewer.viewer.dc4.isSelected()),
+    			"-das="+r(BytecodeViewer.viewer.das.isSelected()),
+    			"-hes="+r(BytecodeViewer.viewer.hes.isSelected()),
+    			"-hdc="+r(BytecodeViewer.viewer.hdc.isSelected()),
+    			"-dgs="+r(BytecodeViewer.viewer.dgs.isSelected()),
+    			"-ner="+r(BytecodeViewer.viewer.ner.isSelected()),
+    			"-den="+r(BytecodeViewer.viewer.den.isSelected()),
+    			"-rgn="+r(BytecodeViewer.viewer.rgn.isSelected()),
+    			"-bto="+r(BytecodeViewer.viewer.bto.isSelected()),
+    			"-nns="+r(BytecodeViewer.viewer.nns.isSelected()),
+    			"-uto="+r(BytecodeViewer.viewer.uto.isSelected()),
+    			"-udv="+r(BytecodeViewer.viewer.udv.isSelected()),
+    			"-rer="+r(BytecodeViewer.viewer.rer.isSelected()),
+    			"-fdi="+r(BytecodeViewer.viewer.fdi.isSelected()),
+    			"-asc="+r(BytecodeViewer.viewer.asc.isSelected()),
     			className,
     			folder};
     }

src/the/bytecode/club/bytecodeviewer/decompilers/java/JavaDecompiler.java

@@ -0,0 +1,25 @@
+package the.bytecode.club.bytecodeviewer.decompilers.java;
+
+import java.io.File;
+
+import org.objectweb.asm.tree.ClassNode;
+
+public abstract class JavaDecompiler {
+
+	public abstract String decompileClassNode(ClassNode cn);
+	public abstract void decompileToZip(String zipName);
+
+    File tempF = null;
+    public int getClassNumber(String start, String ext) {
+    	boolean b = true;
+    	int i = 0;
+    	while(b) {
+    		tempF = new File(start + i + ext);
+    		if(!tempF.exists())
+    			b = false;
+    		else
+    			i++;
+    	}
+    	return i;
+    }
+}

src/the/bytecode/club/bytecodeviewer/decompilers/java/ProcyonDecompiler.java

@@ -0,0 +1,125 @@
+package the.bytecode.club.bytecodeviewer.decompilers.java;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+
+import me.konloch.kontainer.io.DiskReader;
+
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.tree.ClassNode;
+
+import com.strobel.decompiler.Decompiler;
+import com.strobel.decompiler.DecompilerSettings;
+import com.strobel.decompiler.PlainTextOutput;
+
+import the.bytecode.club.bytecodeviewer.BytecodeViewer;
+import the.bytecode.club.bytecodeviewer.JarUtils;
+
+public class ProcyonDecompiler extends JavaDecompiler {
+
+	@Override
+	public String decompileClassNode(ClassNode cn) {
+		try {
+	        final ClassWriter cw = new ClassWriter(0);
+	        cn.accept(cw);
+
+	        String fileStart = BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp";
+	        int fileNumber = getClassNumber(fileStart, ".class");
+	        
+	        final File tempClass = new File(fileStart+fileNumber+".class");
+	        
+	        try {
+	            final FileOutputStream fos = new FileOutputStream(tempClass);
+	            
+	            fos.write(cw.toByteArray());
+	            
+	            fos.close();
+	        } catch (final IOException e) {
+	            e.printStackTrace();
+	        }
+	        
+	        File tempJava = new File(fileStart + getClassNumber(fileStart, ".java") + ".java");
+	        
+	        final FileOutputStream stream = new FileOutputStream(tempJava);
+
+		    try {
+		        final OutputStreamWriter writer = new OutputStreamWriter(stream);
+		        final PlainTextOutput p = new PlainTextOutput(writer);
+
+		        try {
+		            Decompiler.decompile(
+		                cn.getClass().getCanonicalName(),
+		                p,
+		                DecompilerSettings.javaDefaults()
+		            );
+		        } finally {
+		            writer.close();
+		        }
+		    }
+		    finally {
+		        stream.close();
+		    }
+		    
+
+			String s = DiskReader.loadAsString(tempJava.getAbsolutePath());
+			
+			tempJava.delete();
+			tempClass.delete();
+			
+			return s;
+		}
+		catch (final Exception e) {
+		   e.printStackTrace();
+		}
+
+        return "Procyon error! Send the stacktrace to Konloch at http://the.bytecode.club or konloch@gmail.com";
+	}
+
+	@Override
+	public void decompileToZip(String zipName) {
+		/*File tempZip = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp.jar");
+		if(tempZip.exists())
+			tempZip.delete();
+		
+		JarUtils.saveAsJar(BytecodeViewer.getLoadedClasses(), tempZip.getAbsolutePath());
+
+        File zip = new File(zipName);
+        
+        try {
+	        final FileOutputStream stream = new FileOutputStream(zip);
+	
+		    try {
+		        final OutputStreamWriter writer = new OutputStreamWriter(stream);
+		        final PlainTextOutput p = new PlainTextOutput(writer);
+	
+		        try {
+		            Decompiler.decompile(
+		                tempZip.getAbsolutePath(),
+		                p,
+		                DecompilerSettings.javaDefaults()
+		            );
+		        } finally {
+		            writer.close();
+		        }
+		    }
+		    finally {
+		        stream.close();
+		    }
+        } catch(Exception e) {
+        	e.printStackTrace();
+        }
+		
+        File tempZip2 = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp" + BytecodeViewer.fs +tempZip.getName());
+        if(tempZip2.exists())
+        	tempZip2.renameTo(new File(zipName));
+        
+        tempZip.delete();
+        new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp").delete();*/
+		
+		BytecodeViewer.showMessage("ProcyonDecompiler currently doesn't decompile as zip, please wait till 1.3 of Bytecode Viewer.");
+		
+	}
+
+}

src/the/bytecode/club/bytecodeviewer/gui/ClassViewer.java

@@ -35,7 +35,9 @@ import com.jhe.hexed.JHexEditor;
 
 import the.bytecode.club.bytecodeviewer.BytecodeViewer;
 import the.bytecode.club.bytecodeviewer.decompilers.bytecode.BytecodeDecompiler;
+import the.bytecode.club.bytecodeviewer.decompilers.java.CFRDecompiler;
 import the.bytecode.club.bytecodeviewer.decompilers.java.FernFlowerDecompiler;
+import the.bytecode.club.bytecodeviewer.decompilers.java.ProcyonDecompiler;
 
 /**
  * This represents the opened classfile.
@@ -173,17 +175,26 @@ public class ClassViewer extends JPanel {
             sp2 = setDividerLocation(sp2, 1);
         }
     }
-    
+
+    final BytecodeDecompiler bc_dc = new BytecodeDecompiler();
+    final FernFlowerDecompiler ff_dc = new FernFlowerDecompiler();
+    final ProcyonDecompiler proc_dc = new ProcyonDecompiler();
+    final CFRDecompiler cfr_dc = new CFRDecompiler();
     PaneUpdaterThread t;
     public void startPaneUpdater() {
         t = new PaneUpdaterThread(bytecode, decomp) {
+	        String s = "";
 			@Override
 			public void doShit() {
-		        final BytecodeDecompiler bc_dc = new BytecodeDecompiler();
-		        final FernFlowerDecompiler ff_dc = new FernFlowerDecompiler();
 		        
 		        final String b = bc_dc.decompileClassNode(cn);
-		        final String s = ff_dc.decompileClassNode(cn);
+		        
+		        if(BytecodeViewer.viewer.decompilerGroup.isSelected(BytecodeViewer.viewer.fernflowerDec.getModel()))
+		        	s = ff_dc.decompileClassNode(cn);
+		        else if(BytecodeViewer.viewer.decompilerGroup.isSelected(BytecodeViewer.viewer.procyonDec.getModel()))
+		        	s = proc_dc.decompileClassNode(cn);
+		        else if(BytecodeViewer.viewer.decompilerGroup.isSelected(BytecodeViewer.viewer.cfrDec.getModel()))
+		        	s = cfr_dc.decompileClassNode(cn);
 		        
 		        SwingUtilities.invokeLater(new Runnable() {
                     public void run() {

src/the/bytecode/club/bytecodeviewer/gui/MainViewerGUI.java

@@ -1,6 +1,7 @@
 package the.bytecode.club.bytecodeviewer.gui;
 
 import javax.imageio.ImageIO;
+import javax.swing.ButtonGroup;
 import javax.swing.ImageIcon;
 import javax.swing.JFileChooser;
 import javax.swing.JFrame;
@@ -26,7 +27,10 @@ import org.objectweb.asm.tree.ClassNode;
 import the.bytecode.club.bytecodeviewer.BytecodeViewer;
 import the.bytecode.club.bytecodeviewer.FileChangeNotifier;
 import the.bytecode.club.bytecodeviewer.JarUtils;
+import the.bytecode.club.bytecodeviewer.decompilers.bytecode.BytecodeDecompiler;
+import the.bytecode.club.bytecodeviewer.decompilers.java.CFRDecompiler;
 import the.bytecode.club.bytecodeviewer.decompilers.java.FernFlowerDecompiler;
+import the.bytecode.club.bytecodeviewer.decompilers.java.ProcyonDecompiler;
 import the.bytecode.club.bytecodeviewer.plugins.AllatoriStringDecrypter;
 import the.bytecode.club.bytecodeviewer.plugins.PluginManager;
 import the.bytecode.club.bytecodeviewer.plugins.ShowAllStrings;
@@ -40,6 +44,8 @@ import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.util.ArrayList;
 
+import javax.swing.JRadioButtonMenuItem;
+
 
 public class MainViewerGUI extends JFrame implements FileChangeNotifier {
 
@@ -94,7 +100,12 @@ public class MainViewerGUI extends JFrame implements FileChangeNotifier {
     public JCheckBoxMenuItem chckbxmntmNewCheckItem = new JCheckBoxMenuItem("Allow only ASCII characters in strings");
     private final JMenuItem mntmReplaceStrings = new JMenuItem("Replace Strings");
     private final JMenuItem mntmNewMenuItem_4 = new JMenuItem("");
-	
+    private final JMenu mnNewMenu_2 = new JMenu("Java Decompiler");
+    public final JRadioButtonMenuItem fernflowerDec = new JRadioButtonMenuItem("FernFlower");
+    public final JRadioButtonMenuItem procyonDec = new JRadioButtonMenuItem("Procyon");
+    public final JRadioButtonMenuItem cfrDec = new JRadioButtonMenuItem("CFR");
+	public final ButtonGroup decompilerGroup = new ButtonGroup();
+    
     public void setC(boolean busy) {
     	if(busy) {
     		this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
@@ -165,8 +176,16 @@ public class MainViewerGUI extends JFrame implements FileChangeNotifier {
         
         return image;
     }
-    
+
+    final BytecodeDecompiler bc_dc = new BytecodeDecompiler();
+    final FernFlowerDecompiler ff_dc = new FernFlowerDecompiler();
+    final ProcyonDecompiler proc_dc = new ProcyonDecompiler();
+    final CFRDecompiler cfr_dc = new CFRDecompiler();
 	public MainViewerGUI() {
+		decompilerGroup.add(fernflowerDec);
+		decompilerGroup.add(procyonDec);
+		decompilerGroup.add(cfrDec);
+		decompilerGroup.setSelected(procyonDec.getModel(), true);
 		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 		rbr.setSelected(true);
 		rsy.setSelected(false);
@@ -271,8 +290,12 @@ public class MainViewerGUI extends JFrame implements FileChangeNotifier {
                 if (returnVal == JFileChooser.APPROVE_OPTION) {
                     File file = fc.getSelectedFile();
 					BytecodeViewer.viewer.setC(true);
-	        		FernFlowerDecompiler d = new FernFlowerDecompiler();
-	        		d.decompileToZip(file.getAbsolutePath());
+			        if(BytecodeViewer.viewer.decompilerGroup.isSelected(BytecodeViewer.viewer.fernflowerDec.getModel()))
+			        	ff_dc.decompileToZip(file.getAbsolutePath());
+			        else if(BytecodeViewer.viewer.decompilerGroup.isSelected(BytecodeViewer.viewer.procyonDec.getModel()))
+			        	proc_dc.decompileToZip(file.getAbsolutePath());
+			        else if(BytecodeViewer.viewer.decompilerGroup.isSelected(BytecodeViewer.viewer.cfrDec.getModel()))
+			        	cfr_dc.decompileToZip(file.getAbsolutePath());
 					BytecodeViewer.viewer.setC(false);
                 }
         	}
@@ -311,7 +334,15 @@ public class MainViewerGUI extends JFrame implements FileChangeNotifier {
         
         mnView.add(bycSyntax);
         
-        JMenu mnDecompilerSettings = new JMenu("Java Decompiler");
+        menuBar.add(mnNewMenu_2);
+        
+        mnNewMenu_2.add(procyonDec);
+        
+        mnNewMenu_2.add(cfrDec);
+        
+        mnNewMenu_2.add(fernflowerDec);
+        
+        JMenu mnDecompilerSettings = new JMenu("FernFlower");
         menuBar.add(mnDecompilerSettings);
         mnDecompilerSettings.add(rbr);
         mnDecompilerSettings.add(rsy);