Java vs. Python Programming Language Comparison
/Java and Python are two popular programming languages that represent two very different approaches to structure and syntax. Java has a more formal, strict syntax. Python syntax is more forgiving and provides many shortcuts and abbreviations. Java is compiled and Python is interpreted.
The table below shows a sampling of Java and Python programming language elements that highlight these differences.
Java | Python | |
---|---|---|
Block | { . . . } |
def my_block( ): . . . CR |
Class Definition |
public class Hello { . . . } |
class Hello: . . . CR |
Class Constructor |
public Hello(Strng msg) { defaultMsg=msg; } |
def __init__(self, param1, param2, ...) self.p1=param1 self.p2=param2 CR |
Class Instantiation |
Hello mHello=new Hello(); |
mHello=Hello( ) |
Class Variable |
static String myVariable; | class MyClass: my_class_variable = 0 |
Comment | // Comment text. | # Comment text. |
Constant | final static MY_CONSTANT; | MY_CONSTANT |
Conditional | if (a>b) { . . . } else { . . . } |
if (a>b): . . . else: . . . |
Exception Handling |
try { . . . } catch { . . . } |
try: . . . except Error, e: . . . |
Global Variable |
public class MyGlobals { public static String mG1 } |
global my_global_variable |
Importing | import java.sql.*; | import apackage as ap from apackage import amodule |
Inheritance | class Child extends Parent{...} | class Child(Parent): |
Instance Variable |
// Declared outside methods String mVariable; |
class Hello: def __init__(self, param1) self.param1=param1 |
Iteration | for (i=0; i<5; i++) { . . . } for (myElement : myCollection){ . . . } |
for x in range(0, 5): . . . for my_element in my_collection: . . . for key, value in my_dictionary: . . . |
Local Variable |
String myVariable; | my_variable |
Method Definition |
public void myIdea(String param) { . . . } |
def my_idea(my_parameter): . . . CR |
Method Use |
myIdea(mParameter); | my_idea(my_parameter) |
Namespace Reference |
packageName; |
my_namespace={'a':a_object, ...} |
Null Value | null |
None |
Statement Separator |
; |
new line |
Variable | String mString="Hello Java"; |
my_string="Hello Python" |