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What is a Java ClassLoader?
In a few simple sentences, what is a Java ClassLoader, when is it used and why?
7 Answers
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How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version
...e JRE the class file is compatible with.
The reported major numbers are:
Java SE 14 = 58,
Java SE 13 = 57,
Java SE 12 = 56,
Java SE 11 = 55,
Java SE 10 = 54,
Java SE 9 = 53,
Java SE 8 = 52,
Java SE 7 = 51,
Java SE 6.0 = 50,
Java SE 5.0 = 49,
JDK 1.4 = 48,
JDK 1.3 = 47,
JDK 1.2 = 46,
JDK 1.1 = 45
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Tool to read and display Java .class versions
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Use the javap tool that comes with the JDK. The -verbose option will print the version number of the class file.
> javap -verbose MyClass
Compiled from "MyClass.java"
public class MyClass
SourceFile: "MyClass.java"
minor vers...
How to install the JDK on Ubuntu Linux
I am trying to install the Java Development Kit (JDK) on Ubuntu Linux distribution, but I am unable to install it.
33 A...
Convert java.time.LocalDate into java.util.Date type
I want to convert java.time.LocalDate into java.util.Date type. Because I want to set the date into JDateChooser . Or is there any date chooser that supports java.time dates?
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Java Security: Illegal key size or default parameters?
...limited strength file installed now.
You may need to download this file:
Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 6
Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 7 Download
Java Cryptography Extension (JCE) Unlimited Strengt...
Calendar returns wrong month [duplicate]
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This is not an Android issue but a Java issue.
– Grrrben
Dec 6 '15 at 15:00
1
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Gradle finds wrong JAVA_HOME even though it's correctly set
...inary I downloaded from the Ubuntu 13.10 repository itself tries to export JAVA_HOME. Thanks to Lucas for suggesting this.
/usr/bin/gradle line 70:
export JAVA_HOME=/usr/lib/jvm/default-java
Commenting this line out solves the problem, and Gradle finds the correct path to the Java binary.
If y...
How to install Java 8 on Mac
I want to do some programming with the latest JavaFX, which requires Java 8. I'm using IntelliJ 13 CE and Mac OS X 9 Mavericks. I ran Oracle's Java 8 installer, and the files look like they ended up at
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Using the rJava package on Win7 64 bit with R
I'm trying to install rJava on a computer with Win 7 64 bit. When I run
12 Answers
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