delete the specific lines of text file using java code

Firstly, I am a beginner in Java, and I have never been into any programming before, so it seems like I need a little help to solve a task. The task is "I've a text file with the size of more than 5 MB, & I need to clear the contents between the strings CATCH_IN and CATCH_OUT, so whenever CATCH_IN and CATCH_OUT are coming, need to clear the contents between them, after clearing this, white space should be there in the text file I guess, and it should also need to be cleared.

Finally , I’m expecting the output would look like below.

MATCH_START;
CHANGE;
PLAY_START
DFSHDG_FDGSDFGFD"FGFSDG@FSAASDF";
SDHDG_SADFASF:"FGFSDG_FGSDG";
SDFASF_FASFFDGFSDSDFA"A";
SDFSAD_FDGFSDG:"GHFDG";
DFADSF_DSFSHDG;
CATCH_IN;
CATCH_OUT;
SDFSAD_FDGFSDG:"GHFDG";
FGSDGGHG:"1033";
GHJGFH:"FSDGSFDFG";
SOURCE:"894";
FGSDFGF:"24";
SEASOFSDGSFDFGL:"FSDGSFDFG";
HGDHGD:"64916";
GFHFDHD:"FSDGSFDFG";
KEY_INDICATOR:"TRUE";
REAL_NOMIFSDGSFDFGL:"FSDGSFDFG";
TIMESTAMP_ATTR:"20.06.14 17:11:28";
TIMESTAMP_VALUES:"20.06.14 17:11:28";
TSERIES_END;
MATCH_START;
CHANGE;
PLAY_START
DFSHDG_FDGSDFGFD"GFSDGSDG@ADSFSF";
SDHDG_SADFASF:"GFSDGSDG_HDG";
SDFASF_FASFFDGFSDSDFA"M";
SDFSAD_FDGFSDG:"GHFDG";
DFADSF_DSFSHDG;
CATCH_IN;

CATCH_OUT;

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