How to set sysproperty in testng using eclipse?

You could also add It as a syspropertyVariable in your maven-surefire-plugin in your pom.xml, like so, if you don't need changing it often. Otherwise, use the VM arguments like in the previous answers.

<groupId>org.apache.maven.plugins</groupId>            <artifactId>maven-surefire-plugin</artifactId>            <version>2.6</version>            <configuration>                <properties>                    <property>                        <name>usedefaultlisteners</name>                        <value>false</value>                    </property>                    <property>                        <name>listener</name>                        <value>org.uncommons.reportng.HTMLReporter,org.uncommons.reportng.JUnitXMLReporter</value>                    </property>                </properties>                <reportsDirectory>target/surefire-reports</reportsDirectory>                <skipTests>false</skipTests>                <systemPropertyVariables>                    <org.uncommons.reportng.escape-output>false</org.uncommons.reportng.escape-output>                </systemPropertyVariables>            </configuration>

The fist part of question could be addressed by accessing following menu - Run -> Run|Debug Configuration -> Your Configuration -> 'Arguments' tab -> VM arguments. Add following line to the text area:

-Dorg.uncommons.reportng.escape-output=false

For the second question, refer to TestNG Ant documentation:

<testng>   <sysproperty key="org.uncommons.reportng.escape-output" value="false"/>   <!-- the rest of your target --></testng>