JDK should be installed with Read more…
JDK should be installed with proper Read more…
Setting up development Read more…
JDK should be installed with proper Read more…
The String class includes a set of static valueOf() methods that can be used to create strings from other Java objects and primitive types such as int, byte, char, double, boolean, etc.
| Method | Purpose |
|---|
| Method | Purpose |
|---|---|
| concat(String) | Concatenates one string onto another. |
| length() | Returns the length of the string. |
| replace(char old, char new) | Replaces all occurrences of old character with new character. |
| toLowerCase() | Converts the entire string to lowercase. |
| toUpperCase() | Converts the entire string |
As we know, String objects are immutable; all String methods create a new String object in the memory to store the result and will not modify the original String object. Almost all methods from java.lang.String class are explained in the Read more…
s1 = Read more…
There are slight differences between the various methods of creating a String object. String allocation, like all object allocation, proves costly in both time and memory. The JVM performs some trickery while instantiating string literals/objects to increase performance and decrease Read more…
All Java classes inherit a toString() defined in java.lang.Object that is used to generate a string representation of the object. For example, consider the following:
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In this case, a Long object is created and set to hold the value Read more…