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Compile and run a simple java program
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| ddd | Date: Sunday, 2014-09-21, 11:50 AM | Message # 1 |
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| Hi there
I want to compile and run a java program from command prompt and/or from an IDE.
Can you help me in this?
The program should simply print a string.
Thanks
Dipti Vyas
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| shanky | Date: Sunday, 2014-09-21, 12:15 PM | Message # 2 |
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| Hi ddd,
If you are executing a program from command prompt, you have to follow below steps:
- Navigate to bin folder of you java program
- cd C:\Program Files\Java\jdk(version)\bin>
- Make sure that java comiler executable is there. i.e. javac.exe because this is the program which will compile and generate the bytecode for your java program.
- Now create a simplest java program with name "Apples.java" in the same folder where "javac.exe" is . Put following code into the file:
public class Apples{
public static void main(String[] args) {
System.
out.println("Shankar");
}
}
- Make sure that the java file name and the class name should be the same(letter and case)
- Now compile the java program.
javac Apples.java <Press Enter>
- If the program has no compilation errors, it will be compiled and byte code (.class file) will be generated or else fix the compilation errors
- For just printing a string, no imports are required.
- Now, execute the program.
java Apples <press enter>
- You should get the output as:
Shankar
s.k.bhagat
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| shanky | Date: Sunday, 2014-09-21, 12:35 PM | Message # 3 |
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| If you set the path of your java compiler, you can compile and run your java program from anywhere.
For that, you just need to set the path.
set path=%path%;C:\Program Files\Java\jdk<your version>\bin
This will append the path of javac.exe to the path value.
Now suppose your java program is at C:\Dipti\Apples.java
from there also, you can perform
javac Apples.java
and
java Apples
s.k.bhagat
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