Best answer: What are the different ways to give inputs in a Java program?

What are the four ways to obtain user input?

In Java there are four ways we can obtain user input:

  1. Input of Strings. To read the user’s input as a string, we use readLine(“String prompt”) . …
  2. Input of Integers. To read the user’s input in an integer format, we use readInt(“String prompt”) . …
  3. Input of Doubles. …
  4. Input of Booleans. …
  5. User Input Applications.

What are inputs in java?

Java input and output is an essential concept while working on java programming. … The input is the data that we give to the program. The output is the data what we receive from the program in the form of result. Stream represents flow of data or the sequence of data.

What are the three ways to take the values in a java programming?

The three ways to take the input in java are: “By Buffered Reader Class”,”By Console Class” and “By Scanner Class.”

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How do you take user input in Java?

To read a character in Java, we use next() method followed by charAt(0). The next() method returns the next token/ word in the input as a string and chatAt() method returns the first character in that string.

How do you input a string in Java?

Example of nextLine() method

  1. import java.util.*;
  2. class UserInputDemo1.
  3. {
  4. public static void main(String[] args)
  5. {
  6. Scanner sc= new Scanner(System.in); //System.in is a standard input stream.
  7. System.out.print(“Enter a string: “);
  8. String str= sc.nextLine(); //reads string.

How many types of inputs are there in Java?

In Java, there are four different ways for reading input from the user in the command line environment(console).

How do you give output in Java?

Java IO : Input-output in Java with Examples

  1. print(): This method in Java is used to display a text on the console. …
  2. println(): This method in Java is also used to display a text on the console. …
  3. printf(): This is the easiest of all methods as this is similar to printf in C.

What are the input and output of Java compiler?

Answer: The input of a Java compiler is a Java source code file and the output is a Java class file.

How do you input a float in Java?

Example 4

  1. import java.util.*;
  2. public class ScannerNextFloatExample4 {
  3. public static void main(String args[]){
  4. Float number;
  5. Scanner scan = new Scanner( System.in );
  6. System.out.print(“Enter the numeric value : “);
  7. number = scan.nextFloat();
  8. System.out.println(“Float value : ” + number +” nTwice value : ” + 2.0*number );

What are the different types of comments?

The Four Types of Comments

  • The Wise Comment. The wise comment is one that shares knowledge. …
  • The Wicked Comment. …
  • The Ignorant Comment. …
  • The One Who Didn’t Read. …
  • Coda.
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What are the data types supported by Java?

Data Types in Java

  • boolean data type.
  • byte data type.
  • char data type.
  • short data type.
  • int data type.
  • long data type.
  • float data type.
  • double data type.

How do you compare chars in Java?

You can compare Character class objects:

  1. Using Character.compare(char x, char y) Using Character class constructor, we can convert the char primitive value to the Character object. …
  2. Using equals() method. Using equals() method also we can compare the Character class objects.

How do you input a character in a scanner class?

Scanner class in Java. We need to use the next() method to read a single character as a string and then use charAt(0) to get the first character of that string. Scanner scanner = new Scanner(System.in); char ch = scanner. next().

What is charAt in Java?

The Java charAt() method returns a character at a specific index position in a string. The first character in a string has the index position 0. charAt() returns a single character. … The Java charAt() method is used to find the character associated with a certain position in a string.

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