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The result is: Runtime Exception of type OutOfRangeException, Bcoz byte range, is up to 127.īoolean b1=Boolean.parseBoolean(s1.trim()) īoolean b2=Boolean.parseBoolean(s2.trim()) īoolean b3=Boolean.parseBoolean(s3.trim()) Output: Exception in thread "main" : Value out of range. Line no 10: It prints 123 because it is a valid integer. Output: Exception in thread "main" : For input string: "123abc"Īt (Unknown Source)Īt (Unknown Source)Īt .Test.main(Test.java:8)Īt line no 6: it is a Runtime exception of NumberFormatException type because it is not a valid integer value. What will be the result of compiling and executing the below the code? package Reason: Even though i1 and i2 have the same values, we are creating them using new operator it will create different address every time. What is the output of the below code? package i1=i2 gives true because it compares the values of primitive types. “i2 is a local variable of user-defined type “, in all wrapper classes they have overridden the toString() and hashCode() method in such way that it returns content present in it instead of address of i2. Reason: “i1 is a local variable of primitive type“, so in println() method there is an implementation to print the primitive types as a value directly. Unwrapped values (printing as data types)Ĭompile and run the below code? Mention the reason? package Output: Values of Wrapper objects (printing as objects) ("Unwrapped values (printing as data types)") let us print the values from data types objects to data types (retrieving data types from objects) ("Values of Wrapper objects (printing as objects)") Program for Wrapping and unwrapping? package Note: Hence we can apply arithmetic operations directly on both primitive type and object types based on the type of need JVM will take care of it. (OR) Form JDK 1.5 onwards, the process of converting object type into its equivalent primitive type is done by the JVM internally it is known as “auto-unboxing”. The implicit conversion from a primitive type to an object type is known as autoboxing. (OR) From java1.5 onwards, the process of converting primitive type to object type is done by JVM internally it is known as “autoboxing”. “implicit conversion from a primitive type to object type is known as autoboxing”. It is the process of converting from object type to its equivalent primitive type. Integer i1 = new Integer(10) //converted into its object type It is the process of converting from a primitive type into its object type. For representing every String object into its equivalent primitive data type.In order to represent the primitive type of data into its object type.