declare a function with single parameter in java

  public static int foo(int x) {

  }

This code declares a function called “foo” which takes in an integer parameter “x”. The declaration starts with the keyword “public” which means the function is accessible from any other classes in the program. This is followed by the keyword “static” which means the function can be called without creating an instance of the class that contains it. The “int” keyword denotes that the function will be returning an integer value after it is called. The parameter is declared within parentheses after the function name and also has an “int” keyword before it to indicate that it is also an integer. The code ends with an open curly brace which is left empty since this function is not performing an action.