How to Multiply Two Multi-Digit Integers in Java
The Java Programming language was born from the notion of building a cross-platform, object-oriented language influenced by the syntax of C. Thus Java can and does perform many of the same functions as C, with a fully realized object-oriented data hierarchy. That being said, even basic operations like multiplication can be performed in Java, and serve as the foundation for its functionality.
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Instructions
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Set up a multiplication class, which will be the main program in this example:
class Mult{
public static void main(String[] args){}
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Declare two variables that contain multidigit integers in the main method:
public static void main(String[] args){
public int x = 567;
public int y = 789;}
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Multiply the two integers using the * operator:
public static void main(String[] args){
public int x = 567;
public int y = 789;public int z = x * y; // z = 447, 363
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4
Create a larger integer. Normal integers in Java have a maximum value of 2,147,483,647. To multiply larger numbers, use the long data type, which represents a maximum value of 9,223,372,036,854,775,807:
public static void main(String[] args){
public long x = 95678;
public long y = 96789;public long z = x * y; // z = 9,260,577,942
}
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