please explain in java coding and step by step, thank u

You coded the following in your java class. int a = 5; a =+ 3; System.out.println ("The value of a is " + a); The code compiles properly and runs, but the result is not what you expected. The output is The value of a is 3 You expected the value of a to be 8. Explain what the problem is and how to fix it