Java 中的术语“规范形式”或“规范表示”是什么意思

Java中的规范形式或规范表示是什么意思？

java
public class Example {
    public static void main(String[] args) {
        int a = 5;
        int b = 10;
        
        if (a < b) {
            System.out.println("a is less than b");
        } else {
            System.out.println("a is greater than or equal to b");
        }
    }
}

java
public class Example {
    public static void main(String[] args) {
        int numberOfStudents = 5;
        String studentName = "John";
        
        System.out.println(studentName + " is one of the " + numberOfStudents + " students.");
    }
}

java
public class Example {
    public static void main(String[] args) {
        // Calculate the sum of two numbers
        int a = 5;
        int b = 10;
        int sum = a + b;
        
        System.out.println("The sum of " + a + " and " + b + " is " + sum);
    }
}