I went through and uninstalled all Java from my computer. Then I installed JavaSE JDK1.7. I then modified Eclipse configuration so it would start and opened it up. I have an Ant
This is because you still have the old JDK configured as JRE in the External Tools Configuration" in eclipse - open it via the arrow menu next to this button in the toolbar: , then change it to the Java 7 JDK.