Question Detail Which of the following below are valid isolation levels in J2EE TRANSACTION_READ_UNCOMMITTEDTRANSACTION_SERIALIZABLEOnly ABoth A and B Answer: Option D Ad Similar Questions : 1. JAR file contains the compressed version of .java file.class file.jsp fileNone of above Answer: Option B 2. There is no default transaction attribute for an EJB FalseTrue Answer: Option B 3. Why we use array as a parameter of main method it is syntaxCan store multiple valuesBoth of aboveNone of above Answer: Option B 4. After the compilation of the java source code, which file is created by the JVM .class.java.cdr.doc Answer: Option A 5. In java, gc() method is available in which package java.lang packagejava.util packagejava.awt packagejava.io package Answer: Option A Read more from - Java Objective Questions Answers -Chapter 1