ArrayListar = new ArrayList (); String s1 ="Test1"; String s2 ="Test2"; String s3 ="Test3"; ar.add(s1); ar.add(s2); ar.add(s3); String s4 ="Test4"; ar.add(s4);
Here is what the above code is Doing:
1. Create an ArrayList of type String
2. Create 3 String variables
3. Add the 3 String variables to the ArrayList
4. Create another String variable
5. Add the new String variable to the ArrayList
Scanner scanner = new Scanner(System.in); while (true) { String input = scanner.next(); try { int a = Integer.parseInt(input); if (a == 0) { break; } System.out.println(Integer.parseInt(input) * 10); } catch (NumberFormatException e) { System.out.println(“Invalid user input: ” + input); } } Here is what the above code is Doing: 1. It creates a Scanner object…
@SpringBootApplication(exclude={DataSourceAutoConfiguration.class}) Here is what the above code is Doing: 1. @SpringBootApplication is a convenience annotation that adds all of the following: – @Configuration tags the class as a source of bean definitions for the application context. – @EnableAutoConfiguration tells Spring Boot to start adding beans based on classpath settings, other beans, and various property settings….
int[] data = ((DataBufferInt) bufferedImage.getRaster().getDataBuffer()).getData(); Here is what the above code is Doing: 1. Create a BufferedImage object with the same dimensions as the image we want to convert. 2. Create a WritableRaster object from the BufferedImage object. 3. Create a DataBufferInt object from the WritableRaster object. 4. Create an int array from the DataBufferInt…
switch (event) { case PLAY -> { System.out.println(“PLAY event!”); counter++; } case STOP -> System.out.println(“STOP event”); default -> System.out.println(“Unknown event”); }; Here is what the above code is Doing: 1. The switch statement is used to match the event variable against the PLAY and STOP constants. 2. If the event variable is equal to PLAY,…
public class Example { //start coding here } } Here is what the above code is Doing: 1. It’s creating a new class called Example. 2. It’s creating a new method called main. 3. It’s creating a new variable called x and assigning it the value of 5. 4. It’s creating a new variable called…
BigInteger reallyBig = new BigInteger(“1234567890123456890”); BigInteger notSoBig = new BigInteger(“2743561234”); reallyBig = reallyBig.add(notSoBig); Here is what the above code is Doing: 1. Create a BigInteger object with the value 1234567890123456890 2. Create a BigInteger object with the value 2743561234 3. Add the two BigInteger objects together and assign the result to reallyBig The result of…