可以说成:I have graduated from my undergraduate study, and had one year's working experience. I am quite interested in applying for this position, and am adequately confident to be successful!希望能够帮到您!
faith in;be sure of oneself;be confident of。短语有信心 Confidence,be confident of,Confident你应该有有信心 You should have confidence ; You should have a confident有信心克服 Have confidence in overcoming ; confident of overcoming ; Confidence to overcome