[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fY3hnqLNIijWKGjMqKrIifrRMRUthJR6qKlZcYy-JkyQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":23,"type":53},[],"2023-11-10 10:17:52",104836507,[8,9,10,11],"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",{"courseId":13,"courseImg":14,"courseName":15},"f5c2e0a02414fb257d5caa42261d61be","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F125c5dff4296bf954b76ee80c781785a.PNG","Java程序设计","067、126、0b1001_1100_0011_1111、0x10F分别是",[18,25,30,35,40,45,50,54,63,72],{"answer":19,"createTime":5,"id":20,"options":21,"question":22,"source":23,"type":24},[],104836498,[],"Java语言采用双字节的 字符编码","v1",2,{"answer":26,"createTime":5,"id":27,"options":28,"question":29,"source":23,"type":24},[],104836500,[],"String s="127";将s转换为int的代码:int i= ,将s转换为double的代码:double d=",{"answer":31,"createTime":5,"id":32,"options":33,"question":34,"source":23,"type":24},[],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("E= ,Pi= ,String= ,char= ", "HDCZYJ",Math.PI,Math.E,'A')",{"answer":36,"createTime":5,"id":37,"options":38,"question":39,"source":23,"type":24},[],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":41,"createTime":5,"id":42,"options":43,"question":44,"source":23,"type":24},[],104836505,[],"从键盘上输入数据的代码如下:Scanner sc=new Scanner( );System.out.print("请输入一个整数、小数和字符串:");`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",{"answer":46,"createTime":5,"id":47,"options":48,"question":49,"source":23,"type":24},[],104836506,[],"int对应的包装类是 ,char对应的包装类是",{"answer":51,"createTime":5,"id":6,"options":52,"question":16,"source":23,"type":53},[],[8,9,10,11],0,{"answer":55,"createTime":5,"id":56,"options":57,"question":62,"source":23,"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":23,"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":23,"type":82},[],104836520,[76,77,78,79,80],"float f = 1F","float f = 1.0","float f = '1'","float f = "1"","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]