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Home/java

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nancy
nancy

nancy

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nancy
Asked: July 5, 2021In: Java

Maven Compile failed with Source option 5 is no longer supported. Use 7 or later.

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I’m trying to compile my Java Project in Eclipse IDE, but my Maven Compile failed with Source option 5 is no longer supported. Use 7 or later. error. I checked my build path & I can run standalone Java program but ...

javamavenpom xml
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saravanavel
saravanavel

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Asked: June 30, 2021In: Java

java.lang.IllegalStateException: Cannot get a text value from a numeric cell

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How to read numeric or all type of column as String. I want all my column data as String, So I’m trying to get the cell value using cell.getStringCellValue() , Its not working is there any other option in Apache POI ...

apache poiexcel parsingjava
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saravanavel
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Asked: June 30, 2021In: Jackson

com.fasterxml.jackson.core.JsonGenerationException: Null key for a Map not allowed in JSON

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While converting Java Map to JSON using Jackson ObjectMapper I’m getting this error. My map have one null key(As per my use case I need null key). Is there a way to fix this issue without removing null key ? com.fasterxml.jackson.core.JsonGenerationException: ...

jacksonjavajson
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saravanavel
saravanavel

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Asked: June 30, 2021In: Java

org.apache.poi.openxml4j.exceptions.NotOfficeXmlFileException: The supplied data appears to be a raw XML file.

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I’m trying to parse a excel file using apache poi but I’m getting the error “org.apache.poi.openxml4j.exceptions.NotOfficeXmlFileException: The supplied data appears to be a raw XML file. Formats such as Office 2003 XML are not supported“. I research & found xls ...

apache poiexcel parsingjava
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shilpa
shilpa

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shilpa
Asked: June 9, 2021In: Java

How to split the String by space

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I want to split the string by space, below code not working. I’m new to Java. Please share the good tutorials for beginners. String s1 = “Welcome to Hello World Java”; String[] str = s1.split(” “);

javajava stringregexregular expression
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yamini
yamini

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Asked: June 8, 2021In: Java

Tamil text not displayed properly in Graphics2D drawString

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Tamil text not displayed in image created using BufferedImage  & Graphics2D. I set “Latha” font instead of “Arial” but still its displaying text as boxes. Please help me why Tamil font not supported in Graphics2D BufferedImage img = ImageIO.read(new File(“template.jpg”)); Graphics2D g2d ...

bufferedimagegraphics2djavajava image
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techgeek
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techgeek
Asked: June 5, 2021In: Java

Exception in thread “main” java.util.regex.PatternSyntaxException: Unexpected internal error near index 1

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I’m getting below error while split the string by “\” even I used with escape “\\” but still getting the exception Exception in thread “main” java.util.regex.PatternSyntaxException: Unexpected internal error near index 1 \ at java.base/java.util.regex.Pattern.error(Pattern.java:2029) at java.base/java.util.regex.Pattern.compile(Pattern.java:1790) at java.base/java.util.regex.Pattern.<init>(Pattern.java:1431) at java.base/java.util.regex.Pattern.compile(Pattern.java:1070)

core javajavaregexregular expression
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smartrader
smartrader

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smartrader
Asked: May 25, 2021In: Jackson

com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of

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I’m trying to automate my trading strategy. I’m new to programming languages. Just leaned few things in Java and developed the program. I’m getting below error while parsing my timeseries data, Please some one help me com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of ...

jacksonjavajsontrading
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sunitha
sunitha

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sunitha
Asked: May 21, 2021In: Jackson

com.fasterxml.jackson.core.io.JsonEOFException: Unexpected end-of-input within/between Object entries

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Getting below error while parsing huge sized json file. I validated the file in online its valid file only but still getting this issue com.fasterxml.jackson.core.io.JsonEOFException: Unexpected end-of-input within/between Object entries at [Source: (File); line: 1, column: 9546445] at com.fasterxml.jackson.core.base.ParserMinimalBase._reportInvalidEOF(ParserMinimalBase.java:618) at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._skipColon2(UTF8StreamJsonParser.java:3096)

javajson
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priyadharshini
priyadharshini

priyadharshini

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priyadharshini
Asked: May 19, 2021In: Java

java.util.regex.PatternSyntaxException: Dangling meta character ‘?’ near index 0

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I’m trying to replace all the question (?) mark in my document String s = “xyz?”; s.replaceAll(“?”.””); using sample code mentioned above but getter java.util.regex.PatternSyntaxException: Dangling meta character ‘?’ near index 0 what I’m doing wrong here ? why I’m getting this error ? java.util.regex.PatternSyntaxException: ...

javaregexregular expression
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