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Java 2021-11-07 06:34:22
java list length
import java.util.ArrayList; /* * Java Program to find the length of ArrayList. * */ public class ArrayListDemo{ public static void main(String[] args) { System.out.println("Welcome to Java Program to find the length of array list"); ... Add solution -
Java 2021-11-03 18:11:08
java append to list
package com.journaldev.examples; import java.util.ArrayList; import java.util.List; public class ListAddExamples { public static void main(String[] args) { List<String> vowels = new ArrayList<>(); vowels.add("A"); // [A] ... Add solution -
Java 2021-11-02 12:04:22
java read lines from file
private ArrayList<String> readFileLines(String filepath) throws FileNotFoundException, IOException{ File fp = new File(filepath); FileReader fr = new FileReader(fp); BufferedReader br = new BufferedReader(fr); ArrayList<String> lines ... Add solution -
Java 2021-10-29 09:19:11
casting in java
Primitive Type casting and Reference Type casting PRIMITIVE CASTING: implicit casting (casting smaller type to larger int a = 100; double c = a;) explicit casting (casting larger to smaller byte b = (byte) a; REFERENCE CASTING: upcasting - implicitl... Add solution -
Java 2021-10-26 22:39:05
copy arraylist java
List<Something> original=new ArrayList<>(); //insert elements List<Something> copy=new ArrayList<>(original);//create copy here System.out.println(copy.equals(original));//true because the copy has the same elements System.out.prin... Add solution
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