Index: main/java/org/apache/harmony/unpack200/Archive.java =================================================================== --- main/java/org/apache/harmony/unpack200/Archive.java (revision 677463) +++ main/java/org/apache/harmony/unpack200/Archive.java (working copy) @@ -17,6 +17,7 @@ package org.apache.harmony.unpack200; import java.io.BufferedInputStream; +import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; @@ -71,7 +72,7 @@ this.inputFileName = inputFile; this.outputFileName = outputFile; inputStream = new FileInputStream(inputFile); - outputStream = new JarOutputStream(new FileOutputStream(outputFile)); + outputStream = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(outputFile))); } /**