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mLine 3:
Line 3: − sudo apt-get update+ − sudo apt-get install oracle-java8-installer</nowiki>+ Line 404:
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→Interfaces
===With apt===
===With apt===
<nowiki>sudo apt-add-repository ppa:webupd8team/java
<nowiki>sudo apt-add-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer</nowiki>
Also ensure your JAVA_HOME variable has been set to:
Also ensure your JAVA_HOME variable has been set to:
==Interfaces==
==Interfaces==
If you whant to define a method for more than one class, you should use an interface (rigt click on project > new > interface)<br />
If you whant to define a method for more than one class, you should use an interface (rigt click on project > new > interface)<br />
Interfaces file names should start with upper case.<br />
Interfaces file names should start with upper case.<syntaxhighlight lang="java">
public interface GamingConsole {
public void up();
public void down();
public void left();
public void right();
}
public class MarioGame implements GamingConsole {
@Override
public void up() {
System.out.println("Jump");
}
@Override
public void down() {
System.out.println("Goes into a hole");
}
@Override
public void left() {
System.out.println("Go back");
}
@Override
public void right() {
System.out.println("Go forward");
}
}
</syntaxhighlight><br />
Example files:<br />
Example files:<br />
[https://github.com/rafahsolis/javaTutorial/blob/master/interfaces.java interfaces.java]<br />
[https://github.com/rafahsolis/javaTutorial/blob/master/interfaces.java interfaces.java]<br />