class StrDemo {
  public static void main(String args[]) {
   System.out.println("Displaying a string :"+"\'A\'");            //輸出字符串常量及'A'
    System.out.println("Displaying many string :"+"\"string\"");  //輸出字符串常量及"string"
    System.out.println("Displaying a backmark :"+"\\" );        //輸出字符串常量及\符號(hào)
    System.out.println("Text separated\t\tby two tabs");       //輸出插入在字符串常量中的兩個(gè)制表符
    System.out.println("There are two lines\n\nspaced text");  //輸出插入在字符串常量中的兩個(gè)換行符
	System.out.println("************\r####");    //l輸出*串后將光標(biāo)移到行首，然后輸出#串
  }
}