JavaParser fails with JDK 1.5

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'knowledgeBase': Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: java.util.LinkedList.peekLast()Ljava/lang/Object;
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1420)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)
... 57 more
Caused by: java.lang.NoSuchMethodError: java.util.LinkedList.peekLast()Ljava/lang/Object;
at org.drools.rule.builder.dialect.java.parser.JavaParser.addBlockDescr(JavaParser.java:249)
at org.drools.rule.builder.dialect.java.parser.JavaParser.pushContainerBlockDescr(JavaParser.java:254)
at org.drools.rule.builder.dialect.java.parser.JavaParser.ifStatement(JavaParser.java:6263)
at org.drools.rule.builder.dialect.java.parser.JavaParser.statement(JavaParser.java:5918)
at org.drools.rule.builder.dialect.java.parser.JavaParser.blockStatement(JavaParser.java:5733)