Lỗi rror could not find or load main class junit_test.junit_test năm 2024

Also I wonder what you mean with "JavaScript". JaCoCo is a coverage tool for compiled languages (like Java) for the JVM. I don't think JaCoCo works with JavasScript.

Regards, -marc

Ashley Simon

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Sep 20, 2016, 3:07:22 PM9/20/16

to JaCoCo and EclEmma Users

Thanks a lot for the help,

Ashli

Ashley Simon

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Sep 20, 2016, 10:10:11 PM9/20/16

to JaCoCo and EclEmma Users

Hi,

Yes, the code is written in java.My mistake !

Is there any way to have check the whole folder ? Here, I guess the class name can take a particular class , so when giving * or the whole folder name ,It is giving error.

I tried with module..but it says <java> does not support nested module.

And there are no jar files , so I cant give any jar attribute.

Currently I wrote a code that commented the whole <java> part and gave the path for the class files in <junit> itself. So, is it necessary to give that part ?

Can you also say whether the <target name=test> is included in our build.xml for executing the test-cases in our project ?

The newly written code :

<target name="test">

<jacoco:coverage>

<junit fork="true" forkmode="once">

<test name="CodeTest" filtertrace="true"/>

<classpath path="${result.classes.dir}">

<batchtest fork="yes" todir="${result.exec.file}">

<fileset dir="${result.classes.dir}">

<include name="**/*Test*.class"/>

</fileset>

</batchtest>

</classpath>

</junit>

</jacoco:coverage>

</target>

Marc R. Hoffmann

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Sep 21, 2016, 1:39:45 AM9/21/16

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Hi Ashley,

probably you should first get an idea how Ant builds work before you start adding code coverage to it.

Please understand that we cannot provide support for Ant itself. As a starting point you might work through the tutorials in their manuals:

After running java Main, you get the error message, “Could not find or load main class”. What does this mean?

The Solution

This error message usually means that you gave the wrong file (or no file) to java on the command line.

If you run java thisfiledoesnotexist in your terminal or command prompt, you should see the same error.

Error: Could not find or load main class thisfiledoesnotexist Caused by: java.lang.ClassNotFoundException: thisfiledoesnotexist

A common cause of this error is passing in the .class file that javac creates by mistake. For example, let’s say you have the following code in a file called HelloWorld.java:

public class HelloWorld {

public static void main(String[] arg) {
    System.out.println("Hello");
}

When you run javac HelloWorld.java, the file

public class HelloWorld {

public static void main(String[] arg) {
    System.out.println("Hello");
}

0 is produced, which is the compiled version of the program that you can execute.

But to run this program, you should use:

Output:

If you run:

The output will be:

Error: Could not find or load main class HelloWorld.class Caused by: java.lang.ClassNotFoundException: HelloWorld.class

Some other common mistakes that might give you this error include:

• Using the wrong case. For example, public class HelloWorld {

  public static void main(String[] arg) {  
      System.out.println("Hello");  
  }  
  

  } 1 instead of public class HelloWorld {

  public static void main(String[] arg) {  
      System.out.println("Hello");  
  }  
  

  } 2
• Typing errors. For example public class HelloWorld {

  public static void main(String[] arg) {  
      System.out.println("Hello");  
  }  
  

  } 3 instead of public class HelloWorld {

  public static void main(String[] arg) {  
      System.out.println("Hello");  
  }  
  

  } 2
• Using the incorrect directory. First use public class HelloWorld {

  public static void main(String[] arg) {  
      System.out.println("Hello");  
  }  
  

  } 5 to get to the same directory as your public class HelloWorld {

  public static void main(String[] arg) {  
      System.out.println("Hello");  
  }  
  

  } 6 and .class files, and then run public class HelloWorld {

  public static void main(String[] arg) {  
      System.out.println("Hello");  
  }  
  

  } 2.

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Can't load main class 1.1?

I came across this after I updated java versions: "junit: could not load main class 1.1". Go into the eclipse external tools configurations, open the entry for the ant file you are running, then go to the JRE tab, and select "Separate JRE", also making sure your new jre is correctly listed in the Installed JREs...for me, this took care of it.