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java Programming Glossary: obj.getclassHow do I read a private field in Java? http://stackoverflow.com/questions/1196192/how-do-i-read-a-private-field-in-java declared fields and then make them accessible Field f obj.getClass .getDeclaredField stuffIWant NoSuchFieldException f.setAccessible.. by a name which did not correspond to a declared field. obj.getClass .getDeclaredField misspelled will throw NoSuchFieldException..
How do I invoke a Java method when given the method name as a string? http://stackoverflow.com/questions/160970/how-do-i-invoke-a-java-method-when-given-the-method-name-as-a-string something like java.lang.reflect.Method method try method obj.getClass .getMethod methodName param1.class param2.class .. catch SecurityException..
How do I identify immutable objects in Java http://stackoverflow.com/questions/203475/how-do-i-identify-immutable-objects-in-java static boolean isImmutable Object obj Class objClass obj.getClass Class of the object must be a direct child class of the required..
Java array reflection: isArray vs. instanceof http://stackoverflow.com/questions/219881/java-array-reflection-isarray-vs-instanceof there a preference or behavior difference between using if obj.getClass .isArray and if obj instanceof Object java arrays reflection..
Why do I need to override the equals and hashCode methods in Java? http://stackoverflow.com/questions/2265503/why-do-i-need-to-override-the-equals-and-hashcode-methods-in-java this obj return true if obj null return false if getClass obj.getClass return false final MyClass other MyClass obj if importantField..
java: Class.isInstance vs Class.isAssignableFrom http://stackoverflow.com/questions/3949260/java-class-isinstance-vs-class-isassignablefrom Class and obj be some Object . Is clazz.isAssignableFrom obj.getClass always the same as clazz.isInstance obj If not what are the.. of the class clazz . That is clazz.isAssignableFrom obj.getClass clazz.isInstance obj is always true. share improve this answer..
Apache Commons equals/hashCode builder http://stackoverflow.com/questions/5038204/apache-commons-equals-hashcode-builder Bean to make sure you run a null check before this if obj.getClass getClass If you use the second version you probably also want..
http://stackoverflow.com/questions/5689517/java-hashset-vs-hashmap this obj return true if obj null return false if getClass obj.getClass return false SimpleObject other SimpleObject obj if dataField1..
Generic method in Java without generic argument http://stackoverflow.com/questions/590405/generic-method-in-java-without-generic-argument throw new RelevantException Expected class clazz but was obj.getClass catch JAXBException exc throw new RelevantException Error..
Any reason to prefer getClass() over instanceof when generating .equals()? http://stackoverflow.com/questions/596462/any-reason-to-prefer-getclass-over-instanceof-when-generating-equals using instanceof if obj null return false if getClass obj.getClass return false Using instanceof if obj null return false if obj..
How to override equals method in java http://stackoverflow.com/questions/8180430/how-to-override-equals-method-in-java equals Object obj if obj null return false if getClass obj.getClass return false final Person other Person obj if this.name null..
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