public class test { public static void main(String[] args) { // public String(): 创建一个空白字符串对象,不含有任何内容 String s1 = new String(); System.out.println("s1:" + s1); // public String(char[] value): 根据字符数组的内容,来创建字符串对象 char[] chs = {'a', 'b', 'c'}; String s2 = new String(chs); System.out.println("s2:" + s2); // public String(byte[] bytes): 根据字节数组的内容,来创建字符串对象 byte[] bytes = {97, 98, 99}; String s3 = new String(bytes); System.out.println("s3:" + s3); // (推荐)直接赋值的方式创建字符串对象 String s4 = "abc"; System.out.println("s4:" + s4); } }