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java-8spring-cloudjava-6

Is it possible to run Spring cloud on java 6?

I need to run spring cloud on Java 1.6.

I tried spring Initializr which gave Java 1.8 in build.gradle even though selected one is Java 1.6.

I looked into Which Java version is supported by Spring Cloud? which wasn't much help.

I tried compiling Spring cloud on java 6 which resulted in

" java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationListener : org.springframework.cloud.bootstrap.BootstrapApplicationListener "

which is

Caused by: java.lang.UnsupportedClassVersionError: org/springframework/cloud/bootstrap/BootstrapApplicationListener : Unsupported major.minor version 51.0

If its possible, posting the config required in gradle script would be helpful.

Solution

  • No, it is not possible to use Java 6 and Spring Cloud.

    The baseline is Java 7. A couple of Spring Cloud projects have optional modules that require Java 8 and hence JDK 8 is required to compile the whole project, but the modules target Java 7 unless needed.

    Next year, starting with the Edgware Release Train, Spring Cloud will move to a Java 8 baseline following Spring Framework 5 and Spring Boot 2.