stringtest.java

Java程序设计清华出版课件源码答案共十四章

public class StringTest {
	public static void main(String args[]) {
		String s = "This is a test String!";
		System.out.println("before changed, s= " +s);
	
		String t = s.toLowerCase();
		System.out.println("after changed, s= " +s);
		System.out.println("t= " +t);
	}
}