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The RANDOM () METHOD RETURNS random number between 0.0 and 1.0. It ALWAYS returns double.

The random () method returns random number between 0.0 and 1.0. It always returns double.

The MIN () METHOD RETURNS smaller value out of the SUPPLIED VALUES.

The min () method returns smaller value out of the supplied values.

The max () method RETURNS greater value out of the SUPPLIED VALUES.

The max () method returns greater value out of the supplied values.

This METHOD returns ALWAYS DOUBLE, which is not GREATER than the supplied VALUE.

This method returns always double, which is not greater than the supplied value.

This METHOD returns always double, which is not LESS than the supplied value. It returns NEXT AVAILABLE WHOLE number.

This method returns always double, which is not less than the supplied value. It returns next available whole number.

It simply returns the absolute value of the value supplied to the method, i.e. GIVES you the same value. If you supply NEGATIVE value it simply REMOVES the sign.

It simply returns the absolute value of the value supplied to the method, i.e. gives you the same value. If you supply negative value it simply removes the sign.

No. It cannot be instantiated. The class is FINAL and its constructor is PRIVATE. But all the methods are static, so we can use them WITHOUT INSTANTIATING the Math class.

No. It cannot be instantiated. The class is final and its constructor is private. But all the methods are static, so we can use them without instantiating the Math class.

MATH class PROVIDES METHODS for MATHEMATICAL functions.

Math class provides methods for mathematical functions.

OBJECT's of STRING class is immutable and object's of StringBuffer class is mutable MOREOVER String buffer is FASTER in CONCATENATION.

Object's of String class is immutable and object's of StringBuffer class is mutable moreover String buffer is faster in concatenation.

ArrayIndexOutOfBoundsException.

ArrayIndexOutOfBoundsException.

The JAVA.lang. Class class is used to REPRESENT the classes and INTERFACES that are loaded by a java PROGRAM.

The java.lang. Class class is used to represent the classes and interfaces that are loaded by a java program.

TRIM () ELIMINATE SPACES from both the ENDS of a STRING.

Trim () eliminate spaces from both the ends of a string.

An OBJECT is an INSTANCE of a CLASS. Object reference is a pointer to the object. There can be MANY REFERENCES to the same object.

An object is an instance of a class. Object reference is a pointer to the object. There can be many references to the same object.

STRING str1 = "ABC";

String str2 = "XYZ";

String str1 = str1 + str2;

There are 3 OBJECTS.

String str1 = "ABC";

String str2 = "XYZ";

String str1 = str1 + str2;

There are 3 Objects.

USING LENGTH () METHOD of STRING CLASS.

Using length () method of String class.

No. STRING is not a WRAPPER CLASS.

No. String is not a Wrapper class.

BASICALLY for interthread COMMUNICATION.

Basically for interthread communication.

1. CASTING
2. HIERARCHICAL and OBJECT ORIENTED STRUCTURE.