How to Compare Numbers in Java

In Java, you can compare the size of two numbers using relational operators such as >, <, >=, and <=. For example:

int num1 = 10;
int num2 = 20;

if(num1 < num2) {
    System.out.println("num1 is less than num2");
} else if(num1 > num2) {
    System.out.println("num1 is greater than num2");
} else {
    System.out.println("num1 is equal to num2");
}

Furthermore, you can also use the compareTo() method to compare the sizes of two Number objects, which is an abstract method of the Number class that needs to be implemented in specific subclasses. For example:

Integer num1 = 10;
Integer num2 = 20;

int result = num1.compareTo(num2);
if(result < 0) {
    System.out.println("num1 is less than num2");
} else if(result > 0) {
    System.out.println("num1 is greater than num2");
} else {
    System.out.println("num1 is equal to num2");
}

The above methods can be used to compare the sizes of two Number types.