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How to read and write excel file

I want to read and write an Excel file from Java with 3 columns and N rows, printing one string in each cell. Can anyone give me simple code snippet for this? Do I need to use any external lib or does Java have built-in support for it? ...
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Convert data.frame column format from character to factor

... | edited Feb 12 '12 at 23:16 answered Feb 12 '12 at 18:28 ...
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What are the best practices for catching and re-throwing exceptions?

... answered Apr 5 '11 at 12:31 JonJon 383k6868 gold badges674674 silver badges755755 bronze badges ...
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What is pluginManagement in Maven's pom.xml?

... 304 You still need to add <plugins> <plugin> <groupId>org.apache.m...
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How do you specify the date format used when JAXB marshals xsd:dateTime?

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Adding a regression line on a ggplot

... | edited Nov 12 '19 at 13:48 Johannes Stötzer 37322 silver badges1010 bronze badges answered Mar 27 '...
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Create a File object in memory from a string in Java

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Regular expression to match a dot

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How to convert 1 to true or 0 to false upon model fetch

... | edited May 17 at 8:39 answered May 1 '13 at 6:03 Vit...
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Get a list of all the files in a directory (recursive)

... 213 This code works for me: import groovy.io.FileType def list = [] def dir = new File("path_to_p...