Something about java

For myself

Approximate template

class file name{
  public static void main(String[] args) { //Needed for the time being
    int number; //Because it is an integer, int
    number = 3; //Substitute 3 for number
    System.out.println(number);　//output method(Substituted guy)

    String name; //The string is String
    name = "Wanko"; //Substitute wanko for name
    System.out.println(name); //output method
  }
}


##Basic (how to send a message)

class file name { public static void main(String[] args) { System.out.println ("○○"); // The text here is reflected } }

##variable

class MyApp { public static void main(String[] args) { String name = "taguchi" // The right side is assigned to the left side

System.out.println("hello " + name); //hello + name(taguchi)
System.out.println("hello " + name + " again!"); // hello + name(taguchi)  + again

} }

~ $ javac MyApp.java && java MyApp hello taguchi hello taguchi again!

##Receive input from users

import java.util.Scanner;

class MyApp { public static void main(String[] args) { System.out.println ("Your name?"); // Waiting comment There is a line break System.out.print ("Your name?"); // Waiting comment No line breaks String name = new Scanner(System.in).next();

System.out.println("hello " + name);
System.out.println("hello " + name +  " again!");

} } The terminal is waiting for a reply and you will receive a reply when you send

##Let's receive the numerical value and calculate

import java.util.Scanner;

class MyApp { public static void main(String[] args) { System.out.print("Your guess? "); Integer guess = new Scanner(System.in).nextInt();

System.out.println("Your gess: " + guess); } } As new Scanner (System.in), if you want to receive an integer value, use nextInt ()

##Let's change the display according to the conditions

import java.util.Scanner;

class MyApp { public static void main(String[] args) { Integer answer = 6; // Answer to the question

System.out.print ("Your guess?"); // Question Integer guess = new Scanner(System.in).nextInt();

if (answer == guess) {

System.out.println ("Bingo!"); // Answer above (correct answer) }else { System.out.println ("Booooooo"); // Answer above (incorrect answer) }

##Addition of above

import java.util.Scanner;

class MyApp { public static void main(String[] args) { Integer answer = 6;

System.out.print("Your guess? ");
Integer guess = new Scanner(System.in).nextInt();

if (answer == guess) {

System.out.println ("Bingo!"); // Answer } else if (answer > guess) { System.out.println ("The answer is higher"); // Meaning higher } else { System.out.println ("The answer is lower"); // Meaning lower } } }

##Let's generate a random number

import java.util.Scanner; import java.util.Random; // Code to make random numbers

class MyApp { public static void main(String[] args) { Integer answer = new Random (). nextInt (10) + 1; // Random code (+1 is 1 10 added)

System.out.print("Your guess? ");
Integer guess = new Scanner(System.in).nextInt();

if (answer == guess) {
  System.out.println("Bingo!");
} else if (answer > guess) {
  System.out.println("The answer is higher!");
} else {
  System.out.println("The answer is lower!");
}
System.out.println("The answer was " + answer);

} }

##Let's use loop processing

import java.util.Scanner; import java.util.Random;

class MyApp { public static void main(String[] args) { Integer answer = new Random().nextInt(10) + 1;

while (true) {// Code for loop processing System.out.print("Your guess? "); Integer guess = new Scanner(System.in).nextInt();

  if (answer == guess) {
    System.out.println("Bingo!");

break; // Code that prevents looping when the answer is correct } else if (answer > guess ) { System.out.println("The answer is higher!"); } else { System.out.println("The answer is lower!"); } } } }

##Let's display the number of times until the correct answer

import java.util.Scanner; import java.util.Random;

class MyApp { public static void main(String[] args) { Integer answer = new Random().nextInt(10) + 1; Integer count = 0;

while (true) {
  System.out.print("Your guess? ");
  Integer guess = new Scanner(System.in).nextInt();
  count = count + 1;

// count + = 1; // Omitted above // count ++; // Further omit the above

  if (answer == guess) {
    System.out.println("Bingo! It took " + count + " guesses!");

break; // Code to stop when the answer is correct } else if (answer > guess ) { System.out.println("The answer is higher!"); } else { System.out.println("The answer is lower!"); } } } }