Questions on multiple values of a variable

Question

Say
int x=5
x=10
System.out.println(x)

What will be printed as there are two values of x i am so confused my school is not helpful so i downloaded this app to learn java Please help 🙏.

Answer 1

Write the code in a Java code bit on playground.

Run the code.

Observe the output.

Remember that statements in Java need to finish with ";"

Answer 2

Simply follow the steps:
1. Go to Create section.
2. Tap '+' and then select Java to create a new java code bit.
3. In the playground, paste this code.
4. Run the code
5. Watch the output (it's an error).
6. Because every statement on Java ends with ";".
7. Fix it and run it again.
8. It'll be 10.

Reason:
For many programming languages like java, machines interpretes codes (or 'run' it). That means it that the mechines does everything step by step. Which means ir considers every statement as a step.

So 1st line defines an integer variable 'x' with value = 5.
2nd line, when you're mosy probably having problem, it just redefines the value.
Which means the variable is not having multiple values, it has a new value, the computer replaced the previous value with the new.

And it's being printed in the 3rd line, since it's value was set to 5, it'll print that.

-> if you don't know, variables are a pieces (temporary) data stored in the memory while running. So using = sign means it's storing the value in memory.

Answer 3

the last assigned value applies. So 10 overwrites the 5 previously assigned

Answer 4

Thank you so much guys for help appreciate it 🙏 and yeah i am a new student so i forgot the semicolon i will be used to soon