[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fhF4xmB3GkRmXJBs5pi5TWpaUOsoNsT7D0fG7KwWY5FQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":12,"related":13,"source":19,"type":20},[],"2023-11-10 10:17:52",104836505,[],{"courseId":9,"courseImg":10,"courseName":11},"f5c2e0a02414fb257d5caa42261d61be","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F125c5dff4296bf954b76ee80c781785a.PNG","Java程序设计","从键盘上输入数据的代码如下:Scanner sc=new Scanner( );System.out.print(&quot;请输入一个整数、小数和字符串:&quot;);`int n=sc. ();\u002F\u002F输入一个整数double d=sc. ();\u002F\u002F输入一个小数String s=sc. ();\u002F\u002F输入一个字符串",[14,21,26,31,36,39,44,54,63,72],{"answer":15,"createTime":5,"id":16,"options":17,"question":18,"source":19,"type":20},[],104836498,[],"Java语言采用双字节的 字符编码","v1",2,{"answer":22,"createTime":5,"id":23,"options":24,"question":25,"source":19,"type":20},[],104836500,[],"String s=&quot;127&quot;;将s转换为int的代码:int i= ,将s转换为double的代码:double d=",{"answer":27,"createTime":5,"id":28,"options":29,"question":30,"source":19,"type":20},[],104836502,[],"补齐下面代码,输出要求小数总长度不限,保留两位小数;输出字符要求总场宽为5,右对齐;输出字符串按实际长度.System.out.printf(&quot;E= ,Pi= ,String= ,char= &quot;, &quot;HDCZYJ&quot;,Math.PI,Math.E,'A')",{"answer":32,"createTime":5,"id":33,"options":34,"question":35,"source":19,"type":20},[],104836504,[],"在Java中,小数默认为 ,如果要指定 类型请在小数后加F\u002Ff",{"answer":37,"createTime":5,"id":6,"options":38,"question":12,"source":19,"type":20},[],[],{"answer":40,"createTime":5,"id":41,"options":42,"question":43,"source":19,"type":20},[],104836506,[],"int对应的包装类是 ,char对应的包装类是",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":19,"type":53},[],104836507,[48,49,50,51],"十六进制、十进制、八进制、二进制","二进制、十进制、八进制、十六进制","八进制、十进制、二进制、十六进制","十六进制、八进制、十进制、二进制","067、126、0b1001_1100_0011_1111、0x10F分别是",0,{"answer":55,"createTime":5,"id":56,"options":57,"question":62,"source":19,"type":53},[],104836508,[58,59,60,61],"float,double,int,long","double,float,int,byte","byte,long,double,float","double,int,float,long","下列数据类型的精度由高到低的顺序是_______",{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":19,"type":53},[],104836515,[67,68,69,70],"break","default","_object","a-class","下面,哪一个是有效的标识符(Which is a valid identifier)",{"answer":73,"createTime":5,"id":74,"options":75,"question":81,"source":19,"type":82},[],104836520,[76,77,78,79,80],"float f = 1F","float f = 1.0","float f = '1'","float f = &quot;1&quot;","float f = 1.0d","哪两个是有效的float定义?Which two are valid declarations of a float? (Choose two.) A",1]