Which two are valid declarations of a float?()
现有书目表book,包含字段:价格price(float),类别type(char);现在查询各个类别的平均价格、类别名称,以下语句正确的是()。
现有书目表book,包含字段:price(float);现在查询一条书价最高的书目的详细信息,以下语句正确的是()
已定义下列变量: int n; float f; double df; df=10; n=2; 下列语句正确的是()
abstract class abstrctIt { abstract float getFloat (); } public class AbstractTest extends AbstractIt { private float f1= 1.0f; private float getFloat () {return f1;} } What is the result?()
When is the Float object. Created in line 3, eligible for garbage collection?()
1. abstract class AbstractIt { 2. abstract float getFloat(); 3. } 4. public class AbstractTest extends AbstractIt { 5. private float f1 = 1.0f; 6. private float getFloat() { return f1; } 7. } What is the result?()
The lifeline of a life float or buoyant apparatusshall().
float[]f=newfloat[10],则f[0]的值为()
class BaseClass{ private float x= 1.0f; protected void setVar (float f) {x = f;} } class SubClass extends BaseClass { private float x = 2.0f; //insert code here } Which two are valid examples of method overriding?()