JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to appent or concat two Strings in java?


Description:

Below example shows different ways of append or concat two string objects. You can append two strings by just using "+" sign. Also you can concatinate two string objects by calling concat() method.


Code:
package com.myjava.string;

public class MyStringConcat {
    public static void main(String a[]){
        String b = "jump ";
        String c = "No jump";
        /**
         *  We can do string concatination by two ways. 
         *  One is by using '+' operator, shown below. 
         */
        String d = b+c;
        System.out.println(d);
        /**
         *  Another way is by using concat() method, 
         *  which appends the specified string at the end.
         */
        d = b.concat(c);
        System.out.println(d);
    }
}

Example Output

jump No jump
jump No jump

Other String Function Examples

Knowledge Centre
When to use LinkedList or ArrayList?
Accessing elements are faster with ArrayList, because it is index based. But accessing is difficult with LinkedList. It is slow access. This is to access any element, you need to navigate through the elements one by one. But insertion and deletion is much faster with LinkedList, because if you know the node, just change the pointers before or after nodes. Insertion and deletion is slow with ArrayList, this is because, during these operations ArrayList need to adjust the indexes according to deletion or insetion if you are performing on middle indexes. Means, an ArrayList having 10 elements, if you are inserting at index 5, then you need to shift the indexes above 5 to one more.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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