typecasting

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java

What will the following code print out to console? public class Exam { public static void main(String[] arg) { Object obj = null; String str = new String("str"); str = (String) obj; obj = new String("obj"); System.out.print(obj + ", " + str); } }

java

What is the result of the following code compilation and execution? public class Test { public static void main(String[] args) { float f = 1.0 + 1.0f; f = f + 1; System.out.println(f / 0); } }

java

byte x = 0; byte y = (--x<0) ? ++x : -x; System.out.println(y); Result of the code execution will be:

java

Among the snippets of code below choose all that will compile successfully.