2,306
edits
Changes
Jump to navigation
Jump to search
mLine 3:
Line 3: − sudo apt-get update+ − sudo apt-get install oracle-java8-installer</nowiki>+ Line 468:
Line 468: + + + + + + + + + + + + + + + + + + + + + + + + − Line 506:
Line 529: − + − import java.util.HashMap; − import java.util.Map; − − − public class MapRunner { − public static void main(String[] args){ − String str = "Text to count words and letters"; − − Map<Character, Integer> occurances = new HashMap<>(); − char[] chars = str.toCharArray(); − for (char character:characters){ − Integer integer = occurances.get(character); − if (integer == null) { − occurances.put(character, 1); − } else { − occurrances.put(character, integer + 1); − } − System.out.println(occurrances); − } − − − } − } − </syntaxhighlight><br />
→Classes and Objects
===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:
treemap.put("A", 7);
treemap.put("A", 7);
</syntaxhighlight><syntaxhighlight lang="java">
import java.util.HashMap;
import java.util.Map;
public class MapRunner {
public static void main(String[] args){
String str = "Text to count words and letters";
Map<Character, Integer> occurances = new HashMap<>();
char[] chars = str.toCharArray();
for (char character:characters){
Integer integer = occurances.get(character);
if (integer == null) {
occurances.put(character, 1);
} else {
occurrances.put(character, integer + 1);
}
System.out.println(occurrances);
}
}
}
</syntaxhighlight>
</syntaxhighlight>
==Classes and Objects==
==Classes and Objects==
<source lang="java">
<source lang="java">
}
}
}
}
</source><syntaxhighlight lang="java">
</source><br />
==Setters and 'this'==
==Setters and 'this'==
<source lang="java">
<source lang="java">