Simple illustration of string manipulation tools me,this must be 20 byte ,so I add byte

MyTest
......\META-INF
......\........\application.xml
......\MyTest.iml
......\src
......\...\test
......\...\....\Demo
......\...\....\....\AddChar.java
......\...\....\....\BCD.java
......\...\....\....\BitMapTest.java
......\...\....\....\CreateFile.java
......\...\....\....\ExceptionTest.java
......\...\....\....\FileRead.java
......\...\....\....\MyBetyTest.java
......\...\....\....\MyBitTest.java
......\...\....\....\RandomDate.java
......\...\....\....\XmlParsing.java
......\...\....\simulationOfUnionpayTransaction
......\...\....\...............................\AddStringLength.java
......\...\....\...............................\CUPSServer.java
......\...\....\...............................\GenMac.java
......\...\....\...............................\GenPin.java
......\...\....\...............................\HexBinary.java
......\...\....\...............................\MyDes.java
......\...\....\...............................\Object8583.java
......\...\....\...............................\PaymentServer.java
......\...\....\...............................\PosClient.java
......\...\....\...............................\SplitAndLoading8583.java
......\...\....\...............................\StringOrASCII.java
......\...\....\stress
......\...\....\......\ConstantStress.java
......\...\....\......\DefaultResponse.java
......\...\....\......\LeakTest.java
......\...\....\......\Receiver.java
......\...\....\......\ResponseFuture.java
......\...\....\......\SocketSendThread.java
......\...\....\......\StressClient.java
......\...\TryDemo.java

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