Java Questions & Answers

org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set

As I am trying to run a spring-boot application that uses hibernate via spring-jpa, but I am getting this error:Caused by:…

Java

2 Answers · 11.6K Views · Answered ✓

G Asked by: Gillian Hamer · 5 years ago

How to update a value, given a key in a hashmap?

Suppose we have a HashMap in Java.How do I update (increment) the integer-value of the string-key for each existence of the string I find?One could…

Java

1 Answer · 1.3K Views · Answered ✓

D Asked by: Drucilla Tutt · 5 years ago

How To Auto-Format / Indent XML/HTML in Notepad++

Is there a way to re-indent a block of code? I'm looking for something similar to Ctrl+Shift+F in Eclipse (Auto-Format/Indent).To be clear,I already…

Java

1 Answer · 3.9K Views · Answered ✓

H Asked by: Helen Atkinson · 5 years ago

What does “|=” mean? (pipe equal operator)

I tried searching using Google Search and Stack Overflow, but it didn't show up any results. I have seen this in open source library…

Java

1 Answer · 1.9K Views · Answered ✓

A Asked by: Abhinayan Verma · 5 years ago

Eclipse java debugging: source not found

While debugging a java app in eclipse I receive a "Source not found" error in two cases:Stepping into a file in a different project which is already…

Java

1 Answer · 1.6K Views · Answered ✓

C Asked by: Chris EVANS · 5 years ago

file:///E:/ Package 'oracle-java8-installer' has no installation candidate

was trying to install Java 8 using these commands:sudo add-apt-repository ppa:webupd8team/javasudo apt-get updatesudo apt-get install…

Java

1 Answer · 1.1K Views · Answered ✓

C Asked by: Charles Parr · 5 years ago

java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries. spark Eclipse on windows 7

I'm not able to run a simple spark job in Scala IDE (Maven spark project) installed on Windows 7Spark core dependency has been added.val conf = new…

Java

1 Answer · 1.4K Views · Answered ✓

E Asked by: Elizabeth Clark · 5 years ago

Boolean vs boolean in Java

There are discussions around Integer vs int in Java. The default value of the former is null while in the latter it's 0. How about Boolean vs…

Java

1 Answer · 653 Views · Answered ✓

D Asked by: Deepak Mistry · 5 years ago

java.lang.UnsupportedClassVersionError: Bad version number in .class file?

I am getting this error when I include an opensource library that I had to compile from source. Now, all the suggestions on the web indicate that the…

Java

1 Answer · 1.5K Views · Answered ✓

A Asked by: alex GONZALEZ · 5 years ago

Sprintf equivalent in Java

Java

1 Answer · 408 Views · Answered ✓

A Asked by: Anisha Dalal · 5 years ago

What is the difference between & and && in Java?

Java

1 Answer · 1.2K Views · Answered ✓

A Asked by: ananya Pawar · 5 years ago

String's Maximum length in Java - calling length() method

Java

1 Answer · 1.2K Views · Answered ✓

A Asked by: Aswini Lobo · 5 years ago