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Spring Boot Remove Whitelabel Error Page

...lass IndexController implements ErrorController{ private static final String PATH = "/error"; @RequestMapping(value = PATH) public String error() { return "Error handling"; } @Override public String getErrorPath() { return PATH; } } Your code did not ...
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Getting the last element of a split string array

...commas and space. If there are no separators it should return the original string. 8 Answers ...
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Serializing a list to JSON

...(or whatever object you want) with the following: using Newtonsoft.Json; string json = JsonConvert.SerializeObject(listTop10); Update: you can also add it to your project via the NuGet Package Manager (Tools --> NuGet Package Manager --> Package Manager Console): PM> Install-Package Ne...
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Getting A File's Mime Type In Java

...s APIs are rich, it can parse "anything". As of tika-core 1.14, you have: String detect(byte[] prefix) String detect(byte[] prefix, String name) String detect(File file) String detect(InputStream stream) String detect(InputStream stream, Metadata metadata) String detect(InputStream stream, St...
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Why do I need to override the equals and hashCode methods in Java?

...d equals() generated by eclipse) public class MyClass { private final String importantField; private final String anotherField; public MyClass(final String equalField, final String anotherField) { this.importantField = equalField; this.anotherField = anotherField; }...
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How do I trim a file extension from a String in Java?

... str.substring(0, str.lastIndexOf('.')) share | improve this answer | follow | ...
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CSV API for Java [closed]

...'ve used OpenCSV in the past. import au.com.bytecode.opencsv.CSVReader; String fileName = "data.csv"; CSVReader reader = new CSVReader(new FileReader(fileName )); // if the first line is the header String[] header = reader.readNext(); // iterate over reader.readNext until it returns null String[...
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How to remove all white spaces in java [duplicate]

... java.lang.String class has method substring not substr , thats the error in your program. Moreover you can do this in one single line if you are ok in using regular expression. a.replaceAll("\\s+",""); ...
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Format timedelta to string

... You can just convert the timedelta to a string with str(). Here's an example: import datetime start = datetime.datetime(2009,2,10,14,00) end = datetime.datetime(2009,2,10,16,00) delta = end-start print(str(delta)) # prints 2:00:00 ...
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Reuse a parameter in String.format?

.... The first argument is referenced by "1$", the second by "2$", etc. String.format("%1$s %1$s %1$s %1$s %1$s %1$s", hello); share | improve this answer | follow ...