Java ArrayList size() to get number of elements present inside the ArrayList

ArrayList

ArrayList.size() Number of elements present inside the ArrayList.

Examples with output

add()
We will use size() to get the total number of elements present inside the ArrayList.

ArrayList<Integer> marks = new ArrayList<Integer>();
marks.add(55);
marks.add(54);
marks.add(55);
marks.add(54);
System.out.println(marks.size()); //4

Looping through ArrayList

ArrayList<Integer> marks = new ArrayList<Integer>(3);
marks.add(55);
marks.add(54);
marks.add(60);
for(int i=0; i < marks.size(); i++)
	System.out.println(marks.get(i));

Output

55
54
60

We used one for loop and get() to collect each element inside the ArrayList.
Example using string

ArrayList<String> languages = new ArrayList<String>();
languages.add("Java");
languages.add("PHP");
languages.add("Python");
for(int i=0;i<languages.size();i++)
System.out.println(languages.get(i));

Output

Java
PHP
Python

ArrayList Tutorials

add() contains() clear() clone() remove() Java - Tutorials

ArrayList.size()

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