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What is default value of Boolean type variable?
False will be the default value of the boolean datatype in java
How many constructors does the StringTokenizer class have?
As of Java 1.6 it has 3: StringTokenizer(String str) StringTokenizer(String str, String delim) StringTokenizer(String str, String delim, boolean returnDelims)
How do you find out not equals string in java?
Remember that strings are objects. You can use the String.equals method to determine equality, and use the ! (not) operator to test for inequality. public static boolean notEquals(String str1, String str2) { return !str1.equals(str2); }
How can Boolean be used in Java?
An expression is anything that can be evaluated ("calculated"), to get a value. Numeric expressions are more common: anything that you can calculate, and get a number. For example, if a and b are numbers, a + b will give you another number - it is therefore a numeric expression. The variables by themselves are also numeric expressions.A boolean expression is anything that you can evaluate and get a result that is boolean, i.e., either true or false. Here are some examples:a == ba > ba >= 5 && a ba >= 5 && a ba >= 5 && a ba >= 5 && a
How do you convert an integer to Boolean array list in java?
You cannot. An Integer is a numeric value whereas a boolean array list is a collection of a number of true or false values. So, you cannot convert either into the other
What is default value of Boolean type variable?
False will be the default value of the boolean datatype in java
How many constructors does the StringTokenizer class have?
As of Java 1.6 it has 3: StringTokenizer(String str) StringTokenizer(String str, String delim) StringTokenizer(String str, String delim, boolean returnDelims)
What java operator reverses the truth or falsity of a condition?
The ! (boolean invert) operator returns the opposite of a boolean's current value: if(!(7 5," and the statement produces this output: not equal
Can you do a boolean test on integer in java?
No
Difference between equals equals and equal in java?
"==" in java is the binary operator which compares two values and gives a boolean result While "=" in java is a assignment operator which assigns a value to a variable.
What is the defualt value for String in java?
The default value for objects is null; I believe this would apply to a String, too, since Strings are objects.
How do you find out not equals string in java?
Remember that strings are objects. You can use the String.equals method to determine equality, and use the ! (not) operator to test for inequality. public static boolean notEquals(String str1, String str2) { return !str1.equals(str2); }
How can Boolean be used in Java?
An expression is anything that can be evaluated ("calculated"), to get a value. Numeric expressions are more common: anything that you can calculate, and get a number. For example, if a and b are numbers, a + b will give you another number - it is therefore a numeric expression. The variables by themselves are also numeric expressions.A boolean expression is anything that you can evaluate and get a result that is boolean, i.e., either true or false. Here are some examples:a == ba > ba >= 5 && a ba >= 5 && a ba >= 5 && a ba >= 5 && a
How do you convert an integer to Boolean array list in java?
You cannot. An Integer is a numeric value whereas a boolean array list is a collection of a number of true or false values. So, you cannot convert either into the other
How do you represent or in java?
A boolean or comparison in Java is made with the operator.boolean a = true;boolean b = false;if( a b) {...}A bitwise or comparison in Java is made with the | operator.int n = 1;int m = 2;if( n | m == 3 ) {...}
What are JavaScript literal and what are its types?
A data value that appears directly in a statement Literals can be of several types. Some of them are: Number String Boolean
What is the width of Boolean data type in java?
1 bit
What happens if you don't initialize an instance variable of any of the primitive type in java?
Java by default initializes it to the default value for that primitive type. Thus an int will be initialized to 0(zero), a Boolean will be initialized to false.
Which method is default by true in java?
I don't understand what you mean with "default by true"? Please clarify your question. A Java method can have zero or more parameters, and it must have one return value. Any of these can be declared as "boolean", in which case the value can be either true or false.
What are some example for string formatting in Java?
There are lots of examples of string formatting in Java. It can be difficult at times. Some of these examples are, but are not limited to; align, string, format, and JAVA.
What is the Java logical operators that has the highest order of preference?
"The following" doesn't make sense if you don't include a list. You can find a list of Java operators, including their precendence, at http://docs.oracle.com/javase/tutorial/java/nutsandbolts/operators.html. Or search for [java operator precedence] for additional places that explain this topic.
Why using parseInt in java?
parseInt is a method in the Integer class in java and is used to parse string values into integer numbers. ex: int i = Integer.parseInt("10"); After the above line of code, the variable i will be assigned a value of 10 which is the numeric value of the string passed as argument to the parseInt method
What are Integer Boolean and Double wrapper classes?
In Java an integer and a double are "primitive" data types.When dealing with functions, often you want to do more than send an "int" or a "double"'s VALE, you wish to send a REFERENCE of a number type to a function so that you can operate on that number type. What you can do is create a new Integer, Boolean, or Double, and send it to the function. This creates a "CLASS" that acts as an Integer (or whatever you chose).Eg. You want a function that takes in a number variable, and adds two to it, and returns NOTHING. You cannot send a normal "int", because that integer cannot be "referenced" to after the function call. You would create a new Integer Object from the Integer Class, and insert that new object to the function.Integer four = new Integer(4); // Makes a new Integer named "four" with the value 4.There is a wrapper class for every primitive in Java. For instance, the wrapper class for int is Integer, the class for float is Float, and so on. Remember that the primitive name is simply the lowercase name of the wrapper except for char, which maps to Character, and int, which maps to Integer.The Wrapper classes for each of the primitive types is as follows:1. boolean - Boolean2. byte - Byte3. char - Character4. double - Double5. float - Float6. int - Integer7. long - Long8. short - ShortA point to note here is that, the wrapper classes for numeric primitives have the capability to convert any valid number in string format into its corresponding primitive object. For ex: "10" can be converted into an Integer by using the below lineInteger intVal = new Integer("10");I can do the same for all numeric types like long, short etc. But, if I pass an invalid value I will get a "NumberFormatException" Ex:Integer intVal = new Integer("Haha");The Wrapper ConstructorsAll of the wrapper classes except Character provide two constructors: one that takes a primitive of the type being constructed, and one that takes a String representation of the type being constructed-for exampleInteger i1 = new Integer(42);Integer i2 = new Integer("42");orFloat f1 = new Float(3.14f);Float f2 = new Float("3.14f");The Character class provides only one constructor, which takes a char as an argument-for exampleCharacter c1 = new Character('c');The constructors for the Boolean wrapper take either a boolean value true or false, or a String. If the String's case-insensitive value is "true" the Boolean will be true-any other value will equate to any other value will equate to false. Until Java 5, a Boolean object couldn't be used as an expression in a boolean test-for instanceBoolean b = new Boolean("false");if (b) // won't compile, using Java 1.4 or earlierAs of Java 5, a Boolean object can be used in a boolean test, because the compiler will automatically "unbox" the Boolean to a boolean.
Can you compare a boolean to an integer?
no, you cant. it only works on string
How you convert int to string in jsp?
The same way you would in a regular java program. int i = 10; String s = i + ""; after the above line of code the variable s will have "10" as a string value...
