Java Program on Collection Array List Part – 1
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Program 1
package dataflair; import java.util.*; public class TestMain { public static void main(String[] args) { ArrayList<Integer>A=new ArrayList<Integer>(5); System.out.println(A.isEmpty()); A.add(4); //0 A.add(5); //1 A.add(53); //2 A.add(17); //3 A.add(2); //4 A.add(53); //5 A.add(67); A.add(53); A.add(77); System.out.println(A); System.out.println("Index of "+A.indexOf(53)); System.out.println("Last Index of "+A.lastIndexOf(53)); List<Integer>B=new ArrayList<Integer>(5); B=A.subList(2,6); System.out.println(B); Object ar[]; ar=A.toArray(); for(Object O:ar) System.out.println(O); //A.add(2, 125); // A.set(7, 125); // System.out.println(A); // System.out.println(A.get(4)); // Integer I=2; // A.remove(I); // System.out.println(A); // Generic // ArrayList<String>A=new ArrayList<String>(5); // System.out.println(A.size()); // A.add("Rajesh"); // System.out.println(A.add("vivek")); // A.add("Amit"); // A.add("Ashok"); // System.out.println(A.add("vivek")); // // A.add("Anurag"); // A.add("Satish"); // System.out.println(A.add("vivek")); // // System.out.println(A); // System.out.println("-----------------------------------------"); // Remove according to object //System.out.println(A.remove("Amitesh")); // Remove according to index number // System.out.println(A.remove(9)); // System.out.println(A); // System.out.println(A.size()); // //Non Generic // ArrayList mylist=new ArrayList(); // mylist.add("Vivek"); // mylist.add(140); // mylist.add(true); // mylist.add(56.77); // System.out.println(mylist); } }
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