Something like this. double increase = 10000; for (Employee employee : theList) { double salaryNow = employee.getSalary(); employee.setSalary(salaryNow + increase); } Caution – you should never use a double to store an amount of money, as you will be subject to floating point rounding errors. Please use a BigDecimal instead. I’ve only done it in … Read more
The below code works in getting the last index of a certain character: public int lastIndex(char a, char[] data) { int max=-1; for(int i=0; i<data.length; i++) { if(data[i]==a) { max=i; } } return max; } It works by going through the array and finding the latest occurrence of a certain character. The variable ‘max’ is … Read more
In your second code block you are first checking if the first character is the same as the last. If it isn’t, return false. Else, return true. So this isn’t going to be a valid palindrome check. It only checks if the first and last letters are the same or not and ignores the letters … Read more
If I understand your question correctly, every time the loop runs, you want to decrease “powerlevel” by a random value, then display a message depending on whether powerlevel can be reduced. Here are two approaches. 1) use an if statement in your for loop for (conditions){ if(powerlevel cannot be decremented){ //display a messsage break; } … Read more
My guess is that the variable pete is declared as class Employee, which means that only methods of that class can be called on that variable. You must either declare pete as type Worker, or use a cast: ((Worker)pete).work(5);
There are a whole bunch of errors, but this should get you started. Outside of any method, put static int[][] nums = null; static int[][] sample = null; And then inside scanInfo, change the lines to nums = new int[rows][columns]; sample = nums; Also, call scanInfo() from main().
You can’t currently do it with Java (well, you can but it’s really roundabout) There’s a guava library that makes it easier to do functional programming with collections: https://code.google.com/p/guava-libraries/wiki/FunctionalExplained
The thing here, is that you are limiting the number of time a dice can be rolled. In your code, each player roll the time 10 times max, which mean that if they score a low on every roll, they will never reach 100. What you want to do is to use a while loop … Read more
First of all a, e and g are variables and not necessarily strings. What you mean is probably “a”, “e” and “g”. Your question is essentially: How do I sort the values in a String[] so that numbers are sorted numerically and prioritized before letters (or words?) which are sorted alphabetically? Your question seems incomplete, … Read more
public class Coffee { //Instance Variables private double sugar; private int milk; private boolean isHot; // renamed heat to isHot private int size; // Constructor public Coffee (double id, int dairy, boolean temp ) { sugar = id; milk = dairy; heat = temp; } // (setter) public void setSugar(double id) { this.sugar = id; … Read more