data structures & algorithms in java

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Java

state whether each of the following is true or false .explain why

01)all variables must be given a type when they are declared.

02)by convention,class names begin with an uppercase first letter and all subsequent words in the name begin with a capital first letter

03)the arithmetic operators *,/,%,+ and - all have the same level of precedence.

04)the number of argument in the method call must match the number of parameters in the method declaration's parameter list

05)the remainder operator (%)can be used to only with integer operands.

06)an import declaration is not required when one class in a package uses another in the same package.

07)empty parentheses following a method name in a method declaration indicate that the method does not require any parameters to perform its task.

08)variables declared in the body of a particular method are known as instance variables and can be used in all methods of the class

09)variables or methods declared with access modifier private are accessible only to methods of the class in which they are declared.

10)every method?s body is delimited by left and right braces({ and }).

11)primitive-type local variables are initialized by default.

12)any class that contains public static void main(String args[]) can be used to execute an application.

13)the number of arguments in the method call must the number of parameters in the method declaration?s parameter list.

14)floating-point values that appear in source code are known as floating-point literals and are type float by default