The KDJ oscillator display consists of 3 lines (K, D and J - hence the name of the display) and 2 levels. K and D are the same lines when using the stochastic oscillator. The J line represents the deviation of the D value from the K value. The convergence of these lines indicates new trading opportunities. Like the Stochastic Oscillator, oversold and overbought levels correspond to the times when the trend is likely to reverse.