Why do i get error message $"$No tests found with test runner 'JUnit $4\text{'}$when trying to Run As $>$JUnit Test. I get this configuration screen. I have downloaded the $4\mathrm{.}10$JAR

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public class GradeCalculatorTest $\{$

$8$Theta @Test

$9$ public void testCalculateGrade$\_$A$()\{$

$10$ GradeCalculator gradeCalculator $=$ new GradeCalculator$()$;

$11$ String grade $=$ gradeCalculator. calculateGrade$($new int$[]\{90,85,88,95,92,89\})$;

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$\}$

$\}$

assertEquals$("$A$",$ grade, "The grade calculation for $\text{'}$A$\text{'}$ is incorrect."$)$;

@Test

public

Gr

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as

@Test

public

Gr

String grade $=$ gradeCalculator.calculateGrade$($new int$[]\{30,35,40,38,25,28\})$;

assertEquals$("$D$",$ grade, "The grade calculation for $\text{'}$D$\text{'}$ is incorrect."$)$;

No tests found with test runner 'JUnit $4\text{'}.$

testCalculateGrade$\_$A$()$ : void

testCalculateGrade$\_$B$)$ : void

$$ testCalculateGrade$\_$D$()$ : void

Create, manage, and run configurations

Create a configuration that will launch a JUnit test.

Name:

Lesson$1(1)$

Test $($x$)=$ Arguments

JRE

S Dependencies

Source

Environment

Common

Run a single test

Project:

Lesson$1$

Gradle Task

Test class:

Browse...

$$ Java Applet

J Java Application

Ju JUnit

Ju gradecalculater

Test method:

Ju Lesson$1$

JU Lesson$1(1)$

Run all tests in the selected project, package or source folder:

Ju src

Lesson$1$

J$\_($u$)$src $(1)$

Launch Group

m$2$ Maven Build

Include and exclude tags:

Configure...

Test runner:

JUnit $4$

Keep JUnit running after a test run when debugging

public class GradeCalculatorTest f

@Test

public void testCalculateGrade$()\{$

GradeCalculator gradeCalculator $=$ new GradeCalculator$()$;

String grade $=$ gradeCalculator.calculateGrade$($new int$[]\{85,75,65,55,45,95\})$;

assectEquals$("$B$",$ grade, "The grade calculation is incorrect."$)$;

$\}$

$\}$

import java.util.Scanner;

oublic class JavaExample

public static void main$($String args$[])$

$\{$

$/*$ This program assumes that the student has $6$ subjects,

thats why I have created the array of size $6.$ You can

change this as per the requirement.

$*/$

int marks$[]=$ new int$[6]$;

int i;

float total$=0,$ avg;

Scanner $=$ new Scanner$($System$.$in$)$;

for$($i$=0$; i$<mn>6</mn>$; i$++)\{$

System.out.print$("$Enter Marks of Subject"$+($i$+1)+"$;

marks$[$i$]=$ scanner.nextInt$()$;

total $=$ total $+$ marks$[$i$]$;

$\}$

scanner.close$()$;

$//$Calculating average here

avg $=$ total$/6$;

System.out.print$("$The student Grade is: $")$;

if$($avg$>=80)$

$\{$

System.out.print$("$A$")$;

$\}$

else if$($avg$>=60$ && avg$<mn>8</mn><mn>0</mn><mi>)</mi>$

$\{$

System.out.print$("$B$")$;

$\}$

else if$($avg$>=40$ && avg$<mn>6</mn><mn>0</mn><mi>)</mi>$

$\{$

System.out.print$("$C$")$;

$\}$

else

$\{$

System.out.print$("$D$")$;

$\}$

$\}$

$\}$

l

$\}$

package gradecalculater;

import java.util.Scanner;

public class Main $($f

public static void main$($String$[]$ args$)\{$

$/*$

This program assumes that the student has $6$ subjects,

that's why I have created the array of size $6.$

You can change this as per the requirement.

$*/$

int marks$[]=$ new int$[6]$;

int i;

float total $=0,$ avg;

Scanner scanner $=$ new Scanner$($System$.$in$)$;

for $($i $=0$; i $<mtext></mtext><mn>6</mn>$; i$++)\{$

System.out.print$("$Enter Marks of Subject $"+($i $+1)+"$: $")$;

marks$[$i$]=$ scanner.nextInt$()$;

total $=$ total $+$ marks$[$i$]$;

$\}$

scanner.close$()$;

$//$ Calculating average here

avg $=$ total $/6$;

System.out.print$("$The student's Grade is: $")$;

if $($avg $>=80)\{$

System.out.println$("$A$")$;

$\}$ else if $($avg $>=60$ && avg $<mtext></mtext><mn>8</mn><mn>0</mn><mi>)</mi><mtext></mtext><mi>\{</mi>$

System.out.println$("$B$")$;

$\}$ else if $($avg $>=408$& avg $<mtext></mtext><mn>6</mn><mn>0</mn><mi>)</mi><mtext></mtext><mi>\{</mi>$

System.out.println$("$C$")$;

$\}$ else $\{$

System.out.println$("$D$")$;