Unzip.java

Unzip.java

Author: hmkcode

java-unzip/src/main/java/com/hmkcode/Unzip.java

@@ -0,0 +1,71 @@
+package com.hmkcode;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+public class Unzip {
+	
+	 public static void unzip(String zipFile,String outputPath){
+	    	
+		 	if(outputPath == null)
+		 		outputPath = "";
+		 	else
+		 		outputPath+=File.separator;
+		 	
+	    	// 1.0 Create output directory
+	    	File outputDirectory = new File(outputPath);
+	    	
+	    	if(outputDirectory.exists())
+	    		outputDirectory.delete();
+	    		
+	    	outputDirectory.mkdir();
+	    	
+
+	    	// 2.0 Unzip (create folders & copy files)
+	    	try {
+
+	    		// 2.1 Get zip input stream
+	    		ZipInputStream zip = new ZipInputStream(new FileInputStream(zipFile));
+				
+				ZipEntry entry = null;
+				int len;
+				byte[] buffer = new byte[1024];
+				
+				// 2.2 Go over each entry "file/folder" in zip file
+				while((entry = zip.getNextEntry()) != null){
+				
+					if(!entry.isDirectory()){
+						System.out.println("-"+entry.getName());						
+
+						// create a new file
+						File file = new File(outputPath +entry.getName());
+						
+						// create file parent directory if does not exist
+						if(!new File(file.getParent()).exists())
+							new File(file.getParent()).mkdirs();
+						
+						// get new file output stream
+						FileOutputStream fos = new FileOutputStream(file); 
+				
+						// copy bytes
+						while ((len = zip.read(buffer)) > 0) {
+				       		fos.write(buffer, 0, len);
+				        }
+						
+						fos.close();
+					}
+						
+				}
+
+			}catch (FileNotFoundException e) {
+					e.printStackTrace();
+			} catch (IOException e) {
+					e.printStackTrace();
+			}
+	 }
+}