package Demo; public class HelloJava { String url = "http://www.abc.com"; String webName = "ABC"; //System.out.println(url); public void printString() { float x = 223.56F; float y = 100.00f; double d1 = 23.45D; double d2 = 422.22d; double d3 = 2523.234; System.out.println("x = " + x); System.out.println("y = " + y); System.out.println("d1 = " + d1); System.out.println("d2 = " + d2); System.out.println("d3 = " + d3); // ×Ö·ûÐÍ char webName1 = '΢'; char webName2 = 'ѧ'; char webName3 = 'Ô·'; System.out.println("ÍøÕ¾µÄÃû×ÖÊÇ£º" + webName1 + webName2 + webName3); // ÕûÐÍ short x1=22; // Ê®½øÖÆ int y1=022; // °Ë½øÖÆ long z1=0x22L; // Ê®Áù½øÖÆ System.out.println("ת»¯³ÉÊ®½øÖÆ£ºx1 = " + x1 + ", y1 = " + y1 + ", z1 = " + z1); // ¸¡µãÐÍ float m = 22.45f; double n = 10; System.out.println("¼ÆËã³Ë»ý£º" + m + " * " + n + "=" + m*n); // ²¼¶ûÐÍ boolean a = 100>10; boolean b = 100<10; System.out.println("100>10 = " + a); System.out.println("100<10 = " + b); if(a){ System.out.println("100<10ÊǶԵÄ"); }else{ System.out.println("100<10ÊÇ´íµÄ"); } } }