--- a/jp/gr/java_conf/dangan/util/lha/PostLz5Encoder.java
+++ a/jp/gr/java_conf/dangan/util/lha/PostLz5Encoder.java
@@ -219,7 +219,7 @@
         this.buf[ this.index++ ] = (byte)pos;
         this.buf[ this.index++ ] = (byte)( ( ( pos >> 4 ) & 0xF0 ) | matchlen );
 
-        this.position += matchlen + this.Threshold;
+        this.position += matchlen + PostLz5Encoder.Threshold;
 
     }
 
--- a/jp/gr/java_conf/dangan/util/lha/PostLzsEncoder.java
+++ a/jp/gr/java_conf/dangan/util/lha/PostLzsEncoder.java
@@ -200,8 +200,8 @@
 
         this.position += this.matchLength + PostLzsEncoder.Threshold;
 
-        this.out.writeBits( this.PositionBits, pos );                           //throws IOException
-        this.out.writeBits( this.LengthBits,   this.matchLength );              //throws IOException
+        this.out.writeBits( PostLzsEncoder.PositionBits, pos );                           //throws IOException
+        this.out.writeBits( PostLzsEncoder.LengthBits,   this.matchLength );              //throws IOException
     }
 
 
--- a/jp/gr/java_conf/dangan/util/lha/PreLzsDecoder.java
+++ a/jp/gr/java_conf/dangan/util/lha/PreLzsDecoder.java
@@ -213,8 +213,8 @@
                 this.position++;
                 return this.in.readBits( 8 );
             }else{
-                this.matchOffset = this.in.readBits( this.OffsetBits );
-                this.matchLength = this.in.readBits( this.LengthBits );
+                this.matchOffset = this.in.readBits( PreLzsDecoder.OffsetBits );
+                this.matchLength = this.in.readBits( PreLzsDecoder.LengthBits );
                 return this.matchLength | 0x100;
             }
         }catch( BitDataBrokenException exception ){