diff --git a/algs4/src/java/.gitignore b/algs4/src/java/.gitignore
new file mode 100644
index 0000000..e228730
--- /dev/null
+++ b/algs4/src/java/.gitignore
@@ -0,0 +1,28 @@
+Average.java
+BinarySearch.java
+Cat.java
+Counter.java
+RandomSeq.java
+Shuffle.java
+StaticSETofInts.java
+Whitelist.java
+Vector.java
+Date.java
+Transaction.java
+Point2D.java
+Interval1D.java
+Interval2D.java
+ResizingArrayStack.java
+Stack.java
+ResizingArrayQueue.java
+Queue.java
+Bag.java
+Stopwatch.java
+ThreeSum.java
+ThreeSumFast.java
+DoublingTest.java
+DoublingRatio.java
+QuickFindUF.java
+QuickUnionUF.java
+WeightedQuickUnionUF.java
+UF.java
diff --git a/algs4/src/java/chapter-01-files b/algs4/src/java/chapter-01-files
new file mode 100644
index 0000000..f97db4b
--- /dev/null
+++ b/algs4/src/java/chapter-01-files
@@ -0,0 +1,28 @@
+Average
+BinarySearch
+Cat
+Counter
+RandomSeq
+Shuffle
+StaticSETofInts
+Whitelist
+Vector
+Date
+Transaction
+Point2D
+Interval1D
+Interval2D
+ResizingArrayStack
+Stack
+ResizingArrayQueue
+Queue
+Bag
+Stopwatch
+ThreeSum
+ThreeSumFast
+DoublingTest
+DoublingRatio
+QuickFindUF
+QuickUnionUF
+WeightedQuickUnionUF
+UF
diff --git a/algs4/src/java/download-all b/algs4/src/java/download-all
new file mode 100755
index 0000000..3123af6
--- /dev/null
+++ b/algs4/src/java/download-all
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+
+cd $(dirname $(readlink -f $0))
+
+set -x
+
+for n in $(cat chapter-01-files)
+do
+    curl -O "http://algs4.cs.princeton.edu/11model/${n}.java"
+    chmod 444 "${n}.java"
+done