Quick Answer: How do you assign multiple values to a string in Java?

How do you assign multiple values to a string variable in Java?

You can also assign multiple variables to one value: a = b = c = 5; This code will set c to 5 and then set b to the value of c and finally a to the value of b . One of the most common operations in Java is to assign a new value to a variable based on its current value.

Is multiple assignment possible in Java?

tl;dr: No, there isn’t such a thing in Java. You can assign initial values to variables like this: int foo = 1, bar = 2; But if your want (1, 2, 3) to be the result of a method call, this is not possible in Java.

How do you assign multiple values to a key in Java?

How to add multiple values per key to a Java HashMap

  1. Stick with the standard APIs and add a collection class like a ‘Vector’ or ‘ArrayList’ to your map or set.
  2. Use the MultiMap and MultiValueMap classes from the Apache Commons library.
IT IS INTERESTING:  How do you check a size of a table in SQL Server?

How do you declare multiple strings in Java?

Initialize Multiple String Variables With the Same Value in Java. In the below example 1, we declare the variables one , two , and three of the String type and then we initialize all the three variables with the same value. We are doing this by chained assignment.

How do you assign multiple values to a variable?

You can assign the same value to multiple variables by using = consecutively. This is useful, for example, when initializing multiple variables to the same value. It is also possible to assign another value into one after assigning the same value.

How can I set multiple values in a list in Java?

Add Multiple Items to an Java ArrayList

  1. List<Integer> anotherList = Arrays. asList(5, 12, 9, 3, 15, 88); list. …
  2. List<Integer> list = new ArrayList<>(); Collections. addAll(list, 1, 2, 3, 4, 5);
  3. List<Integer> list = new ArrayList<>(); Integer[] otherList = new Integer[] {1, 2, 3, 4, 5}; Collections.

How can I return multiple values?

We can use following solutions to return multiple values.

  1. If all returned elements are of same type.
  2. If returned elements are of different types.
  3. Using Pair (If there are only two returned values) We can use Pair in Java to return two values.
  4. If there are more than two returned values. …
  5. Returning list of Object Class.

How do you pass multiple values to one variable in Java?

5 ways to return multiple values from a method in Java

  1. Using a POJO class instance. This is the most commonly used method to return multiple values from a method in Java. …
  2. Using javafx. util. …
  3. Return an array of specific type or an object array. …
  4. Return a Collection.
IT IS INTERESTING:  Do I need to know JS for TypeScript?

What is an assignment statement in Java?

An assignment statement designates a value for a variable. … In Java, an assignment statement is an expression that evaluates a value, which is assigned to the variable on the left side of the assignment operator. Whereas an assignment expression is the same, except it does not take into account the variable.

Can a HashMap have multiple values for same key?

HashMap doesn’t allow duplicate keys but allows duplicate values. That means A single key can’t contain more than 1 value but more than 1 key can contain a single value. HashMap allows null key also but only once and multiple null values.

Can one key have multiple values?

In python, if we want a dictionary in which one key has multiple values, then we need to associate an object with each key as value. This value object should be capable of having various values inside it. We can either use a tuple or a list as a value in the dictionary to associate multiple values with a key.

How HashMap add multiple values to same key?

21 Answers

  1. Use a map that has a list as the value. Map<KeyType, List<ValueType>> .
  2. Create a new wrapper class and place instances of this wrapper in the map. Map<KeyType, WrapperType> .
  3. Use a tuple like class (saves creating lots of wrappers). Map<KeyType, Tuple<Value1Type, Value2Type>> .
  4. Use mulitple maps side-by-side.

How do you input multiple strings?

1 Answer

  1. char *str[10]; for(i=0; i<10; i++){ str[i] = malloc(sizeof(char) * 1024); }
  2. char str[10][1024]; for(i=0; i<10; i++){ scanf(“%s”, str[i]); }
  3. char **str = malloc(10*sizeof(char*)); for(int i=0; i<10; i++){ str[i] = malloc(sizeof(char) * 1024); // buffer for 1024 chars }
IT IS INTERESTING:  How set SQL Profiler trace?

How do you split a string in Java?

Java String split() method with regex and length example 2

  1. public class SplitExample3 {
  2. public static void main(String[] args) {
  3. String str = “Javatpointtt”;
  4. System.out.println(“Returning words:”);
  5. String[] arr = str.split(“t”, 0);
  6. for (String w : arr) {
  7. System.out.println(w);
  8. }

How do you read multiple lines on a scanner?

1 Answer

  1. Scanner in = new Scanner(System.in); System.out.printf(“Please specify how many lines you want to enter: “); String[] input = new String[in.nextInt()];
  2. in.nextLine(); //consuming the <enter> from input above. for (int i = 0; i < input.length; i++) { …
  3. } System.out.printf(“nYour input:n”);
Secrets of programming