In which section of build.gradle is it possible to specify the name of the application?

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The application name can be specified in the "defaultConfig" section of the build.gradle file. Within this section, the "applicationId" property can be set to the desired name of the application. For example:

android {
    defaultConfig {
        applicationId "com.example.myapp"
        // Other configuration properties
    }
    // Other configurations
}