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What is the difference between generic collection and non generic collection in java?
Generic collections were introduced in Java 1.5 and since then have become preferable to non-generic collections. A non-generic collection defaults to being a collection of Objects, and in order to effectively use those Objects, you need to cast them as their correct data type during use. A generic collection knows what type of object it contains, and thus no casting is needed.
What are the difference between array declaration in java and c plus plus?
There is no difference, other than that declarations in C++ can also initialise the variable in a single instruction. C example: int x; // declaration x=5; // initialisation C++ example: int y=5; // declaration and initialisation combined.
Would you explain diff between int and integer?
In Java, int is a primitive data type that is used to hold numeric values. for example an int variable can be used to hold your age in a Java program. Integer is the Wrapper class for the int data type. In Java there are a lot of in built features that work only on objects. under such circumstances we can wrap the primitive data type in its wrapper and use it. For example: int x = 10; Integer xObj = newInteger(x); if you want to know the value contained in xObj, then we use the method intValue(). xObj.intValue() would return the value 10 contained in it.
How do you determine the size of an array of int passed to a method?
It really depends on the language. In Java, you can use the .length property.
What is the use of trim in java?
trim() is said to be used to remove the trail spaces . But for an instance if u have an int like 5660 how would u trim it
How can someone convert string to int in Java?
To convert string to int in Java, the easiest way is to simply use the method Integer.parseInt(). For more information how to do this, refer to the integer class documents.
What is the function of int in Java?
Well, you could be asking what the PURPOSE of "int" in code. If you say: int i = 0; You're declaring a variable to use in the program. int is an Integer keyword and it will store a number for you for use in loops or for doing math operations.
What is the difference between generic collection and non generic collection in java?
Generic collections were introduced in Java 1.5 and since then have become preferable to non-generic collections. A non-generic collection defaults to being a collection of Objects, and in order to effectively use those Objects, you need to cast them as their correct data type during use. A generic collection knows what type of object it contains, and thus no casting is needed.
What are the difference between array declaration in java and c plus plus?
There is no difference, other than that declarations in C++ can also initialise the variable in a single instruction. C example: int x; // declaration x=5; // initialisation C++ example: int y=5; // declaration and initialisation combined.
Would you explain diff between int and integer?
In Java, int is a primitive data type that is used to hold numeric values. for example an int variable can be used to hold your age in a Java program. Integer is the Wrapper class for the int data type. In Java there are a lot of in built features that work only on objects. under such circumstances we can wrap the primitive data type in its wrapper and use it. For example: int x = 10; Integer xObj = newInteger(x); if you want to know the value contained in xObj, then we use the method intValue(). xObj.intValue() would return the value 10 contained in it.
How does java secures the code?
java is securejava uses the pointer internally. programer cannot use the pointer in our program explicitly. due to use of pointers information may be lostex-int *p;int a=56;int b=98;p=&a;p=&b;in above program first time pointer points the a value and in next line p points the b value, so here a information is lost
Syntax of printf?
I think you can use 'printf' like blew, int printf( const char *format [, argument]... );int _printf_l( const char *format, locale_t locale [, argument]... );int wprintf( const wchar_t *format [, argument]... );int _wprintf_l( const wchar_t *format, locale_t locale [, argument]... );at the same time, I give a example using the 'printf',/** * example using the 'printf' */include int main() { int e; int i; e = _set_printf_count_output( 1 ); printf( "%%n support was %sabled.\n", e ? "en" : "dis" ); printf( "%%n support is now %sabled.\n", _get_printf_count_output() ? "en" : "dis" ); printf( "12345%n6789\n", &i ); // %n format should set i to 5 printf( "i = %d\n", i ); }
How do you convert a number into an integer?
To convert a number into an integer in programming, you can use specific functions or methods depending on the language. For example, in Python, you can use the int() function, like int(3.7) which will return 3. In Java, you can cast a double to an integer using (int), such as (int) 3.7, which will also result in 3. This process typically truncates any decimal portion of the number.
What is overloded?
In Java, overloading a method is when you use the same signature for several methods in a class but alter the argument list in each method. Note that although the return types can be altered, overloading is only recognized when the arguments are changed. An example is shown below:public int add(int[] arr){...}public double add(double[] arr,double t){...}public String add(String[] arr){...}
How do you convert a char to an int in java?
Assuming - char mychar ; and int myint have been properly declared, myint = (int) mychar; // converts This is a feature of Java= to change types, put the type you want to convert into in parenthes before the variable that stores the converted value. ^Will convert your char into an int, but it will be the ascii value. For example, mychar = 3; myint = (int) mychar; //returns 51 To make an accurate one that will not return an error, you can use a try-catch statement Example char mychar = '3'; try { int myint = (int) mychar; }catch(NumberFormatException e) { //Do whatever you want with it! }
How do you determine the size of an array of int passed to a method?
It really depends on the language. In Java, you can use the .length property.
What is the use of trim in java?
trim() is said to be used to remove the trail spaces . But for an instance if u have an int like 5660 how would u trim it
