Java instruction execution statement

Introduction

Good evening everyone! This article is my first post. If you find any mistakes, please let me know. Thank you.

What is an instruction execution statement?

Instruction execution statements are statements for calling various instructions provided by Java. To give you an example, the easiest thing for anyone studying Java is

System.out.println();

  public static void main(String[] args) {
     System.out.println("Hello World");   //Instruction execution statement
}

result

Hello World

is. In JavaScript document.write() It's similar to!

Let's see more! !!

Compare the two values ​​and substitute the larger one

int m = Math.max(①, ②);

public class Main {
  public static void main(String[] args){
    int a = 10;
    int b = 20;
    int m = Math.max(a, b);     //Instruction execution statement
    System.out.println(a + "When" + b + "And the bigger one..." + m)
  }
}

result

10 and 20 whichever is larger...20

Instruction to generate and assign random numbers

int r = new java.util.Random( ).nextInt(①);

• ① is the upper limit of random numbers to be generated

public class Main {
  public static void main(String[] args){
    int r = new java.util.Random().nextInt(100);  //Instruction execution statement
    System.out.println("The number you chose is..." + r + "is not it?");
  }
}

result

The number you chose is...23, right?

• 23 of this result is randomly extracted from the numbers from 0 to 100 each time it is executed.

Accepts one line of input from the person who entered the character

String s = new java.util.Scanner(System.in).nextLine();

public class Main {
  public static void main(String[] args){
    System.out.println("Please input your name");
    String name = new java.util.Scanner(System.in).nextLine();  //Instruction execution statement
    System.out.println("Welcome," + name + "San!")
  }
}

result

• When Taro is entered in name

Welcome, Taro!

Finally

System.out.println, which is often used when using java, is also one of the statements of instruction execution. There are still other instructions for executing instructions. Personally, I was impressed when I first used the instruction to generate random numbers. It's fun to be able to do what you can't do. Thank you for watching until the end.