String面試題1

public class StringTest {

	public static void stringReplace(String text) {
		text = text.replace('j', 'i');
	}

	public static void bufferReplace(StringBuffer text) {
		text.append("C");
		text = new StringBuffer("Hello");
		text.append("World!");
	}

	public static void main(String[] args) {
		String textString = new String("java");
		textString.replace('j', 'i');
		StringBuffer textBuffer = new StringBuffer("java");
		stringReplace(textString);
		bufferReplace(textBuffer);
		System.out.println(textString + textBuffer); // javajavaC
	}
}