Java – spring utilities cannot be resolved

• Java

I'm trying to use one of the Oracle GUI examples of spring utilities But eclipse gave me errors and could not resolve types. When I tried to compile, the spring utilities I got could not be solved I'm using the 1.7 JDK. I guess I have to add something somewhere, but I can't find more information about this problem on the Internet

Solution

Spring utilities are not included in JDK / JRE It is used in the spring layout tutorial,

http://docs.oracle.com/javase/tutorial/uiswing/layout/spring.html

The source is linked to this page and can be viewed in

http://docs.oracle.com/javase/tutorial/uiswing/examples/layout/SpringGridProject/src/layout/SpringUtilities.java

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