Java ArrayList ensureCapacity() to ensure minimum number of elements for the ArrayList

ArrayList

ArrayList.ensureCapacity(int minimumCapacity) Ensure Minimum capacity of elements for the ArrayList.
int minimumCapacity : Required, Integer , Minimum capacity to ensure.

add()
Examples with output

ArrayList<Integer> marks = new ArrayList<Integer>(3);
marks.add(55);
marks.add(54);
marks.add(60);
marks.ensureCapacity(8);
marks.add(61);
marks.add(62);
System.out.println(marks); //[55, 54, 60, 61, 62]

Example with string

ArrayList<String> languages = new ArrayList<String>(3);
languages.add("Java");
languages.add("PHP");
languages.add("Python");
System.out.println(languages); //[Java, PHP, Python]
languages.ensureCapacity(5);
languages.add("HTML");

System.out.println(languages); //[Java, PHP, Python, HTML]

ArrayList Tutorials

addAll() add() contains() clear() Java - Tutorials

ArrayList.ensureCapacity()

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