Correct Experience Test

Test.java

package com.comphenix.testing;

class Test {
    private int expTotal;
    private int expLevel;
    private float exp;

    public static void main(String[] args) {
        Test test = new Test();
        test.test();
    }
    
    public void test() {
        int previous = 0;
        int level = 0;
        
        while (expLevel < 45) {
            giveExp(1);
            
            if (level != expLevel) {
                System.out.println(expLevel + ": " + (expTotal - previous));

                level = expLevel;
                previous = expTotal;
            }
        }
    }
    
    public void giveExp(int i) {
        int j = 2147483647 - this.expTotal;

        if (i > j) {
            i = j;
        }

        this.exp += (float) i / (float) getExpToLevel();
        
        for (this.expTotal += i; this.exp >= 1.0F; this.exp /= (float) getExpToLevel()) {
            this.exp = ((this.exp - 1.0F) * (float) getExpToLevel());
            levelUp(1);
        }
    }

    public void levelUp(int i) {
        this.expLevel += i;
        
        if (this.expLevel < 0) {
            this.expLevel = 0;
            this.exp = 0.0F;
            this.expTotal = 0;
        }
    }

    public int getExpToLevel() {
        return this.expLevel >= 30 ? 62 + (this.expLevel - 30) * 7 : (this.expLevel >= 15 ? 17 + (this.expLevel - 15) * 3 : 17);
    }
}