Python vs. Java: Notes for Class Discussions
For class discussion:
Concepts |
Sample Python 3.1 programs |
Sample Java programs |
| IDE and introduction | Discussion on Python: using IDLE Uses indentation for blocks of code Statement terminator: not needed! Operator: for concatenation - use + Operator: for string repetition - use * Discussion on ** for exponentiation. Data types review: int, float, string, boolean, etc. (Note - Python does not provide "char") |
Discussion on Java: using JCreator/NetBeans/Eclipse Using braces for blocks of code Statement terminator: semi-colon Operators: + for concatenation Use code to implement string repetition There is no ** operator for exponentiation. Data types: int, float, double, char, boolean, etc. |
| Hello, World! | Hello, world! | "hello, world!" in Java |
| Working with integers | integer arithmetic | integer arithmetic |
| Data entry: text | data entry | data entry: text |
| Data entry: numbers | data entry | data entry: numbers |
| Selection statements: if/else | Rolling a virtual die | Rolling a virtual die |
| Selection statements: switch | (not available) | Rolling a virtual die |
| Repeetition: while loops | Basic while loop | Basic while loop |
| Repetition: for loops | Nested for loop | Nested for loop |
| Working with Strings | Basic loop for working with a string | Basic for loop for working with a String |
| Repetition: do/while loops | (not available) | do/while loop: looking for snake eyes! |
| Writing a method / function | Green Eggs and Ham - using a function | Green Eggs and Ham - using a void function |
| Writing a method / function which returns a value | Converting temperatures -Fahrenheit & Celsius | Converting temperatures -Fahrenheit & Celsius |
| Using an array / list to roll a virtual die | Rolling a virtual die - using a list for totals | Rolling a virtual die - using an array for totals |
For further reference - from Java to Python:
