Error: Could not initialize class com.android.sdklib.repository. AndroidSdkHandler@TOC

After studio installs or upgrades to 4.2 + for the first time, an error is reported in the construction project. The reason is very simple, because the Java path configured for the project is wrong

because the default JDK path of the project will become the JDK path of studio after updating the version. At this time, you need to add your SDK as Java in the “environment variable”_ Home, and then the JDK path of the project must be the same as Java_Home remains the same and error is eliminated