Unable to find suitable jdk installation Please make sure you have a suitable jdk installation.Android development requires at least JDK 6 (1.6) Unity

Engine: Unity

Error :

Unable to find suitable jdk installation Please make sure you have a suitable jdk installation.Android development requires at least JDK 6 (1.6) Unity

Solution: 

Just download Java(https://java.com/en/download/index.jsp)

of course if your already have (jdk and jre) installed

Hope It helpped