new file:   bin/.gitignore
	renamed:    src/codes/chapter15/FileTest.java -> src/codes/chapter15/class1/FileTest.java
	renamed:    src/codes/chapter15/FilenameFilterTest.java -> src/codes/chapter15/class1/FilenameFilterTest.java
	renamed:    src/codes/chapter15/FileInputStreamTest.java -> src/codes/chapter15/class3/FileInputStreamTest.java
	renamed:    src/codes/chapter15/FileOutputStreamTest.java -> src/codes/chapter15/class3/FileOutputStreamTest.java
	renamed:    src/codes/chapter15/FileReaderTest.java -> src/codes/chapter15/class3/FileReaderTest.java
	renamed:    src/codes/chapter15/FileWriterTest.java -> src/codes/chapter15/class3/FileWriterTest.java
	renamed:    src/codes/chapter15/KeyinTest.java -> src/codes/chapter15/class4/KeyinTest.java
	renamed:    src/codes/chapter15/PrintStreamTest.java -> src/codes/chapter15/class4/PrintStreamTest.java
	renamed:    src/codes/chapter15/PushbackTest.java -> src/codes/chapter15/class4/PushbackTest.java
	renamed:    src/codes/chapter15/StringNodeTest.java -> src/codes/chapter15/class4/StringNodeTest.java
	renamed:    src/codes/chapter7/TestSearch.java -> src/codes/chapter7/class8/TestSearch.java
	renamed:    src/codes/chapter7/TestSort.java -> src/codes/chapter7/class8/TestSort.java
	renamed:    src/codes/chapter7/TestSynchronized.java -> src/codes/chapter7/class8/TestSynchronized.java
	renamed:    src/codes/chapter7/TestUnmodifiable.java -> src/codes/chapter7/class8/TestUnmodifiable.java