转义字符

package lesson03;

public class DataDemo05 {
    public static void main(String[] args) {
        char ch1 = '\"';     //表示的是一个"
        char ch2 = '\\';      //表示的是一个\
        System.out.println("ch1 = " + ch1);
        System.out.println("ch2 = " + ch2);
        System.out.println("\"Hello World!\"");
    }
}

运行结果：

ch1 = "
ch2 = \
"Hello World!"