casechange.java

来自「JAVA编程思想源代码 值得一下 很难找的」· Java 代码 · 共 15 行

package chapter8;

public class CaseChange {

	public static void main(String[] args) {
		String s1 = "AbCdEf";
		String s2 = "dEf";
		System.out.println("s1大写形式是:" + s1.toUpperCase());
		System.out.println("s1 = " + s1);
		System.out.println("s2小写形式是:" + s2.toLowerCase());

	}

}