Re: java interop help for beginner calling java class
ANother step further
Thanks for the help..
I set up the diretory struc and can import the class.
Now to get the call working.
On Friday, March 28, 2014 10:12:08 AM UTC-5, bww00...@yahoo.com wrote:
I have read so much i cant see the tree for the forest.
and need some help calling the ocfLZW class below from clojure.
THANKS for the help
using eclipse and counterclockwise
In clojure
have the data to decompress read into an array.
have an array allocated to hold the decompresed data
The java class ocfLZW is accessible
I have a java program exert below that calls the ocfLZW class and verified
that it works.
FileInputStream fis = new FileInputStream(input);
byte[] sInefficient= new byte[(int)input.length()] ;
fis.read(sInefficient);
OcfLZW oi = new OcfLZW();
byte[] out = null;
out = new byte[160];
int len = oi.expand(sInefficient, out);
System.out.println(new String (out));
System.out.println(out size = +len);
ocfLZW java class that does LZW decompress
/* */ public class OcfLZW
/* */ {
/* */ static final int INIT_BITS = 9;
/* 6 */ final int MAX_BITS = 13;
/* 7 */ final int TABLE_SIZE = 9029;
/* 8 */ final int HASH_SHIFT = 5;
/* 9 */ final int CLEAR_TABLE = 256;
/* 10 */ final int TERMINATOR = 257;
/* */ static final int FIRST_CODE = 258;
/* */ static final int CHECK_TIME = 100;
/* 13 */ final int STACK_SIZE = 4000;
/* 14 */ boolean EOF = false;
/* */ static int myIndex;
/* */ static int offset;
/* */ static int input_bit_buffer;
/* */ static int output_bit_buffer;
/* */ static int string_code;
/* */ static int bytes_out_this_time;
/* 22 */ static int next_code = 258;
/* */ static int max_code;
/* 24 */ static int checkpoint = 100;
/* 25 */ static int tot_bytesin = 0;
/* */ static int gbl_ulong;
/* 28 */ static int[] code_value = null;
/* 29 */ static int[] prefix_code = null;
/* 31 */ int input_bit_count = 0;
/* 32 */ int output_bit_count = 0;
/* 33 */ int num_bits = 9;
/* 34 */ int clear_bytesin = 0;
/* 35 */ int clear_bytesout = 0;
/* 36 */ int tot_bytesout = 0;
/* */ int ratio_new;
/* 38 */ int ratio_old = 100;
/* 40 */ static boolean compress_flag = false;
/* 41 */ static int initialized = 0;
/* 43 */ static byte[] in_buffpoint = null;
/* 44 */ static byte[] out_buffpoint = null;
/* 45 */ int in_buff_n = 0;
/* 45 */ int out_buff_n = 0;
/* 45 */ int in_buffend = 0;
/* 45 */ int out_buffend = 0;
/* 47 */ byte[] append_character = null;
/* 48 */ byte gbl_ptr_idx = 0;
/* 50 */ byte[] decode_stack = null;
/* 51 */ int ds_i = 0;
/* */
/* */ public int expand(byte[] paramArrayOfByte1, byte[]
paramArrayOfByte2)
/* */ {
/* 56 */ this.ds_i = 0;
/* */
/* 58 */ compress_flag = false;
/* */
/* */
/* 61 */ max_code = (1 this.num_bits) - 1;
/* 62 */ prefix_code = new int[9029];
/* 63 */ this.append_character = new byte[9029];
/* */
/* */
/* */
/* 67 */ this.decode_stack = new byte[4000];
/* 69 */ if ((prefix_code == null) || (this.append_character == null)
|| (this.decode_stack == null) || ((compress_flag) (code_value ==
null))) {
/* 73 */ return 0;
/* */ }
/* 75 */ out_buffpoint = paramArrayOfByte2;
/* 76 */ this.out_buff_n = 0;
/* 77 */ in_buffpoint = paramArrayOfByte1;
/* 78 */ this.in_buff_n = 0;
/* */
/* */
/* */
/* 82 */ int[] arrayOfInt1 = new int[1];
/* 83 */ int i = 0;
/* 84 */ int j = 0;
/* */
/* 86 */ int[] arrayOfInt2 = new int[1];
/* 87 */ int m = 0;
/* 88 */ arrayOfInt1[0] = 0;
/* */
/* 90 */ arrayOfInt2[0] = 0;
/* */
/* 92 */ int k = 1;
/* */
/* */
/* */
/* */
/* */
/* 98 */ inputCode(arrayOfInt1);
/* 99 */ while ((!this.EOF) (arrayOfInt1[0] != 257))
/* */ {
/* 100 */ if (k 0)
/* */ {
/* 101 */ i = arrayOfInt1[0];
/* 102 */ j = i;
/* 104 */ if (arrayOfInt1[0] = 255)
/* */ {
/* 105 */ k = 0;
/* 106 */ if (putByte(i) == 0) {
/* 107 */ return 0;
/* */ }
/* 108 */ m++;
/* 109 */ inputCode(arrayOfInt1);
/* 110 */ continue;
/* */ }
/* */ }
/* 114 */ if (arrayOfInt1[0] == 256)
/* */ {
/* 115 */ k = 1;
/* 116 */ this.num_bits = 9;
/* 117 */ next_code = 258;
/* 118 */ max_code = MAXVAL(this.num_bits);
/* 119 */ inputCode(arrayOfInt1);
/* */ }
/* */ else
/* */ {
Re: java interop help for beginner calling java class
So close!!
i have a question about the called java class and access to the byte array
from clojure upon return of the call to java
the call to the method in the class has 2 args buffer in and buffer out. i
confirmed that the data is in buf and nnnx contains the correct
size of the uncompressed file. i do not see the uncompressed data in bufout.
(import '(mynicelzw1 OcfLZWBW))
def fbw (new OcfLZWBW)
buf (byte-array 1) ; input buffer
n (.read in buf) ; file read in to decompress
bufout (byte-array 20) ; output buffer
nnnx(.expand fbw buf bufout)
When I debug the repl i see the the
file read in to buf
the call made to .expand in the class OcfLZWBW
I get the correct number of the size of the uncompressed data (nnnx)
I do not see the uncompressed data in bufout, in the debug bufout is null.
as always any help would be appreciated.
Thanks
On Friday, March 28, 2014 10:12:08 AM UTC-5, bww00...@yahoo.com wrote:
I have read so much i cant see the tree for the forest.
and need some help calling the ocfLZW class below from clojure.
THANKS for the help
using eclipse and counterclockwise
In clojure
have the data to decompress read into an array.
have an array allocated to hold the decompresed data
The java class ocfLZW is accessible
I have a java program exert below that calls the ocfLZW class and verified
that it works.
FileInputStream fis = new FileInputStream(input);
byte[] sInefficient= new byte[(int)input.length()] ;
fis.read(sInefficient);
OcfLZW oi = new OcfLZW();
byte[] out = null;
out = new byte[160];
int len = oi.expand(sInefficient, out);
System.out.println(new String (out));
System.out.println(out size = +len);
ocfLZW java class that does LZW decompress
/* */ public class OcfLZW
/* */ {
/* */ static final int INIT_BITS = 9;
/* 6 */ final int MAX_BITS = 13;
/* 7 */ final int TABLE_SIZE = 9029;
/* 8 */ final int HASH_SHIFT = 5;
/* 9 */ final int CLEAR_TABLE = 256;
/* 10 */ final int TERMINATOR = 257;
/* */ static final int FIRST_CODE = 258;
/* */ static final int CHECK_TIME = 100;
/* 13 */ final int STACK_SIZE = 4000;
/* 14 */ boolean EOF = false;
/* */ static int myIndex;
/* */ static int offset;
/* */ static int input_bit_buffer;
/* */ static int output_bit_buffer;
/* */ static int string_code;
/* */ static int bytes_out_this_time;
/* 22 */ static int next_code = 258;
/* */ static int max_code;
/* 24 */ static int checkpoint = 100;
/* 25 */ static int tot_bytesin = 0;
/* */ static int gbl_ulong;
/* 28 */ static int[] code_value = null;
/* 29 */ static int[] prefix_code = null;
/* 31 */ int input_bit_count = 0;
/* 32 */ int output_bit_count = 0;
/* 33 */ int num_bits = 9;
/* 34 */ int clear_bytesin = 0;
/* 35 */ int clear_bytesout = 0;
/* 36 */ int tot_bytesout = 0;
/* */ int ratio_new;
/* 38 */ int ratio_old = 100;
/* 40 */ static boolean compress_flag = false;
/* 41 */ static int initialized = 0;
/* 43 */ static byte[] in_buffpoint = null;
/* 44 */ static byte[] out_buffpoint = null;
/* 45 */ int in_buff_n = 0;
/* 45 */ int out_buff_n = 0;
/* 45 */ int in_buffend = 0;
/* 45 */ int out_buffend = 0;
/* 47 */ byte[] append_character = null;
/* 48 */ byte gbl_ptr_idx = 0;
/* 50 */ byte[] decode_stack = null;
/* 51 */ int ds_i = 0;
/* */
/* */ public int expand(byte[] paramArrayOfByte1, byte[]
paramArrayOfByte2)
/* */ {
/* 56 */ this.ds_i = 0;
/* */
/* 58 */ compress_flag = false;
/* */
/* */
/* 61 */ max_code = (1 this.num_bits) - 1;
/* 62 */ prefix_code = new int[9029];
/* 63 */ this.append_character = new byte[9029];
/* */
/* */
/* */
/* 67 */ this.decode_stack = new byte[4000];
/* 69 */ if ((prefix_code == null) || (this.append_character == null)
|| (this.decode_stack == null) || ((compress_flag) (code_value ==
null))) {
/* 73 */ return 0;
/* */ }
/* 75 */ out_buffpoint = paramArrayOfByte2;
/* 76 */ this.out_buff_n = 0;
/* 77 */ in_buffpoint = paramArrayOfByte1;
/* 78 */ this.in_buff_n = 0;
/* */
/* */
/* */
/* 82 */ int[] arrayOfInt1 = new int[1];
/* 83 */ int i = 0;
/* 84 */ int j = 0;
/* */
/* 86 */ int[] arrayOfInt2 = new int[1];
/* 87 */ int m = 0;
/* 88 */ arrayOfInt1[0] = 0;
/* */
/* 90 */ arrayOfInt2[0] = 0;
/* */
/* 92 */ int k = 1;
/* */
/* */
/* */
/* */
/* */
/* 98 */ inputCode(arrayOfInt1);
/* 99 */ while ((!this.EOF) (arrayOfInt1[0] != 257))
/* */ {
/* 100 */ if
Re: java interop help for beginner calling java class
Did you move it to the corresponding directory structure? So, com.example.mystuff would need a directory hierarchy like com/example/mystuff. The mystuff directory is where you need to put your java files that are in the com.example.mystuff package. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: java interop help for beginner calling java class
Thanks I did not set the hierarchy I will give that a whirl Regards Bryan On Saturday, March 29, 2014 1:07:40 PM UTC-5, Chris Shellenbarger wrote: Did you move it to the corresponding directory structure? So, com.example.mystuff would need a directory hierarchy like com/example/mystuff. The mystuff directory is where you need to put your java files that are in the com.example.mystuff package. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
java interop help for beginner calling java class
I have read so much i cant see the tree for the forest.
and need some help calling the ocfLZW class below from clojure.
THANKS for the help
using eclipse and counterclockwise
In clojure
have the data to decompress read into an array.
have an array allocated to hold the decompresed data
The java class ocfLZW is accessible
I have a java program exert below that calls the ocfLZW class and verified
that it works.
FileInputStream fis = new FileInputStream(input);
byte[] sInefficient= new byte[(int)input.length()] ;
fis.read(sInefficient);
OcfLZW oi = new OcfLZW();
byte[] out = null;
out = new byte[160];
int len = oi.expand(sInefficient, out);
System.out.println(new String (out));
System.out.println(out size = +len);
ocfLZW java class that does LZW decompress
/* */ public class OcfLZW
/* */ {
/* */ static final int INIT_BITS = 9;
/* 6 */ final int MAX_BITS = 13;
/* 7 */ final int TABLE_SIZE = 9029;
/* 8 */ final int HASH_SHIFT = 5;
/* 9 */ final int CLEAR_TABLE = 256;
/* 10 */ final int TERMINATOR = 257;
/* */ static final int FIRST_CODE = 258;
/* */ static final int CHECK_TIME = 100;
/* 13 */ final int STACK_SIZE = 4000;
/* 14 */ boolean EOF = false;
/* */ static int myIndex;
/* */ static int offset;
/* */ static int input_bit_buffer;
/* */ static int output_bit_buffer;
/* */ static int string_code;
/* */ static int bytes_out_this_time;
/* 22 */ static int next_code = 258;
/* */ static int max_code;
/* 24 */ static int checkpoint = 100;
/* 25 */ static int tot_bytesin = 0;
/* */ static int gbl_ulong;
/* 28 */ static int[] code_value = null;
/* 29 */ static int[] prefix_code = null;
/* 31 */ int input_bit_count = 0;
/* 32 */ int output_bit_count = 0;
/* 33 */ int num_bits = 9;
/* 34 */ int clear_bytesin = 0;
/* 35 */ int clear_bytesout = 0;
/* 36 */ int tot_bytesout = 0;
/* */ int ratio_new;
/* 38 */ int ratio_old = 100;
/* 40 */ static boolean compress_flag = false;
/* 41 */ static int initialized = 0;
/* 43 */ static byte[] in_buffpoint = null;
/* 44 */ static byte[] out_buffpoint = null;
/* 45 */ int in_buff_n = 0;
/* 45 */ int out_buff_n = 0;
/* 45 */ int in_buffend = 0;
/* 45 */ int out_buffend = 0;
/* 47 */ byte[] append_character = null;
/* 48 */ byte gbl_ptr_idx = 0;
/* 50 */ byte[] decode_stack = null;
/* 51 */ int ds_i = 0;
/* */
/* */ public int expand(byte[] paramArrayOfByte1, byte[]
paramArrayOfByte2)
/* */ {
/* 56 */ this.ds_i = 0;
/* */
/* 58 */ compress_flag = false;
/* */
/* */
/* 61 */ max_code = (1 this.num_bits) - 1;
/* 62 */ prefix_code = new int[9029];
/* 63 */ this.append_character = new byte[9029];
/* */
/* */
/* */
/* 67 */ this.decode_stack = new byte[4000];
/* 69 */ if ((prefix_code == null) || (this.append_character == null)
|| (this.decode_stack == null) || ((compress_flag) (code_value ==
null))) {
/* 73 */ return 0;
/* */ }
/* 75 */ out_buffpoint = paramArrayOfByte2;
/* 76 */ this.out_buff_n = 0;
/* 77 */ in_buffpoint = paramArrayOfByte1;
/* 78 */ this.in_buff_n = 0;
/* */
/* */
/* */
/* 82 */ int[] arrayOfInt1 = new int[1];
/* 83 */ int i = 0;
/* 84 */ int j = 0;
/* */
/* 86 */ int[] arrayOfInt2 = new int[1];
/* 87 */ int m = 0;
/* 88 */ arrayOfInt1[0] = 0;
/* */
/* 90 */ arrayOfInt2[0] = 0;
/* */
/* 92 */ int k = 1;
/* */
/* */
/* */
/* */
/* */
/* 98 */ inputCode(arrayOfInt1);
/* 99 */ while ((!this.EOF) (arrayOfInt1[0] != 257))
/* */ {
/* 100 */ if (k 0)
/* */ {
/* 101 */ i = arrayOfInt1[0];
/* 102 */ j = i;
/* 104 */ if (arrayOfInt1[0] = 255)
/* */ {
/* 105 */ k = 0;
/* 106 */ if (putByte(i) == 0) {
/* 107 */ return 0;
/* */ }
/* 108 */ m++;
/* 109 */ inputCode(arrayOfInt1);
/* 110 */ continue;
/* */ }
/* */ }
/* 114 */ if (arrayOfInt1[0] == 256)
/* */ {
/* 115 */ k = 1;
/* 116 */ this.num_bits = 9;
/* 117 */ next_code = 258;
/* 118 */ max_code = MAXVAL(this.num_bits);
/* 119 */ inputCode(arrayOfInt1);
/* */ }
/* */ else
/* */ {
/* 127 */ if (arrayOfInt1[0] = next_code)
/* */ {
/* 128 */ this.decode_stack[this.ds_i] = ((byte)j);
/* 129 */ if (decodeString(arrayOfInt2, this.decode_stack,
this.ds_i + 1, i) == 0) {
/* 130 */ return 0;
/* */ }
/* */ }
/* 133 */ else if
Re: java interop help for beginner calling java class
bww00amd...@yahoo.com bww00amd...@yahoo.com writes:
I have read so much i cant see the tree for the forest. and need some
help calling the ocfLZW class below from clojure.
If that's really the complete class definition...
/* */ public class OcfLZW
/* */ {
... then you can't use it from Clojure because it's defined in the
default package. There's no way to refer to such classes from any other
package except from the default package itself (no matter if from
Clojure or Java).
Solution: Add a
package my.nice.lzw;
to the top of the java file. Then you can instantiate it and call its
method's from Clojure like so:
(let [oi (my.nice.lzw.OcfLZW.);; instantiate an object of that class
s-inefficient ...
out ...]
(.expand oi s-inefficient out)) ;; call its expand() method
HTH,
Tassilo
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Re: java interop help for beginner calling java class
Thanks the help is much appreciated
created file ocfLZWBW,java
added
package my.nice.lzw; to the top of the file
changed
/* */ public class OcfLZW to /* */ public class OcfLZWBW
compiled ocfLZWBW.java to a class file of ocfLZWBW.class (no errors)
in eclipse added the ocfLZWBW.class files
in eclipse i see public class my.nice.lzw.ocfLZWBW when i use the class file
editor
added
(let [oi (my.nice.lzw.OcfLZWBW.) buff buffout] ;; instantiate an object of
that class
(.expand oi buff buffout)) ;; call its expand() method
fired up the repl
get a compilerexception
java.lang.ClassNotFoundException: my.nice.lzw.ocfLZWBW
On Friday, March 28, 2014 12:15 PM, Tassilo Horn t...@gnu.org wrote:
bww00amd...@yahoo.com bww00amd...@yahoo.com writes:
I have read so much i cant see the tree for the forest. and need some
help calling the ocfLZW class below from clojure.
If that's really the complete class definition...
/* */ public class OcfLZW
/* */ {
... then you can't use it from Clojure because it's defined in the
default package. There's no way to refer to such classes from any other
package except from the default package itself (no matter if from
Clojure or Java).
Solution: Add a
package my.nice.lzw;
to the top of the java file. Then you can instantiate it and call its
method's from Clojure like so:
(let [oi (my.nice.lzw.OcfLZW.) ;; instantiate an object of that class
s-inefficient ...
out ...]
(.expand oi s-inefficient out)) ;; call its expand() method
HTH,
Tassilo
--
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Groups Clojure group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
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clojure+unsubscr...@googlegroups.com
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