java
Duplicate key in stream Collectors.toMap
java\.lang\.IllegalStateException.*Duplicate key
Fixes
- 1.Provide a merge function as third argument to Collectors.toMap()
- 2.Use Collectors.groupingBy() instead if duplicates are expected
- 3.Filter duplicates upstream before collecting
streamscollections
Related Errors
java3 fixes
Spring Boot bean not found in application context
NoSuchBeanDefinitionException.*No qualifying bean of type
- •Add @Component/@Service/@Repository annotation to the class
- •Ensure the package is scanned: check @ComponentScan or @SpringBootApplication basePackages
java3 fixes
Spring circular dependency during bean creation
BeanCurrentlyInCreationException.*Requested bean is currently in creation
- •Use @Lazy annotation on one of the circular dependencies
- •Refactor to break the circular dependency with an event or interface
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Spring Boot unsatisfied dependency injection
UnsatisfiedDependencyException.*Error creating bean with name
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