Les phases de compilation et d`exécution en environnement Java.

Transcription

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public class Essai
{
static public void main(String[] args)
{
System.out.println("Un essai...");
outils.Calcul un_calcul = new outils.Calcul();
System.out.println(un_calcul.somme(4,5));
}
}
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package outils;
public class Calcul
{
public int somme(int x,int y)
{
return x+y;
}
}
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D:\Progs\JavaProgs\Tests>javac -verbose Essai.java
[parsing started Essai.java]
[parsing completed 31ms]
[loading C:\j2sdk1.4.2_02\jre\lib\rt.jar(java/lang/Object.class)]
[loading C:\j2sdk1.4.2_02\jre\lib\rt.jar(java/lang/String.class)]
[checking Essai]
[loading C:\j2sdk1.4.2_02\jre\lib\rt.jar(java/lang/System.class)]
[loading C:\j2sdk1.4.2_02\jre\lib\rt.jar(java/io/PrintStream.class)]
[loading C:\j2sdk1.4.2_02\jre\lib\rt.jar(java/io/FilterOutputStream.class)]
[loading C:\j2sdk1.4.2_02\jre\lib\rt.jar(java/io/OutputStream.class)]
[loading .\outils\Calcul.java]
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6'6
[parsing started .\outils\Calcul.java]
[wrote Essai.class]
[checking outils.Calcul]
[wrote .\outils\Calcul.class]
[total 250ms]
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[checking Essai]
[loading .\outils\Calcul.class]
[wrote Essai.class]
[total 266ms]
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D:\Progs\JavaProgs\Tests>set CLASSPATH=D:
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[checking Essai]
Essai.java:6: package outils does not exist
^
^
[total 234ms]
2 errors
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D:\Progs\JavaProgs\Tests>set CLASSPATH=D:;.
[checking Essai]
[wrote Essai.class]
[total 265ms]
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D:\Progs\JavaProgs\Tests>set CLASSPATH=D:
D:\Progs\JavaProgs\Tests>javac -verbose -classpath . Essai.java
[checking Essai]
[wrote Essai.class]
[total 235ms]
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D:\Progs\JavaProgs\Tests>set CLASSPATH=.
D:\Progs\JavaProgs\Tests>javac -verbose -classpath d: Essai.java
[checking Essai]
^
^
[total 219ms]
2 errors
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package outils;
public class Calcul
{
{
return x+y+1;
}
}
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[checking Essai]
[wrote Essai.class]
[total 265ms]
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package outils;
public class Calcul
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return x+y+new GenerateurValeur().valeurBizarre();
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package outils;
public class GenerateurValeur
{
public int valeurBizarre()
{
return 3;
}
}
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[checking Essai]
[wrote Essai.class]
[loading .\outils\GenerateurValeur.java]
[parsing started .\outils\GenerateurValeur.java]
[checking outils.GenerateurValeur]
[wrote .\outils\GenerateurValeur.class]
[total 281ms]
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D:\Progs\JavaProgs\Tests>java Essai
Un essai...
12
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package outils;
public class GenerateurValeur
{
public int valeurBizarre()
{
return 0;
}
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[checking Essai]
[wrote Essai.class]
[total 265ms]
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D:\Progs\JavaProgs\Tests>java Essai
Un essai...
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D:\Progs\JavaProgs>javac -verbose -sourcepath src -classpath exec src\Essai.java
-d exec
[parsing started src\Essai.java]
[checking Essai]
[loading src\outils\Calcul.java]
[parsing started src\outils\Calcul.java]
[wrote exec\Essai.class]
[wrote exec\outils\Calcul.class]
[total 281ms]
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-d exec
[checking Essai]
[loading exec\outils\Calcul.class]
[total 250ms]
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package outils;
public class Calcul
{
{
return x+y+42;
}
}
-
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-d exec
[checking Essai]
[loading src\outils\Calcul.java]
[parsing started src\outils\Calcul.java]
[wrote exec\outils\Calcul.class]
[total 313ms]
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Les phases de compilation et d`exécution en environnement Java.

Transcription

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