JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to compare two String objects in java?


Description:

The below example shows how to compare two string objects in java. You can not use "==" operator to compare two strings. String provides equals() method to compare two string objects. Also you can ignore case during string compare by calling equalsIgnoreCase() method. '==' operator compares the object reference but not the string value.


Code:
package com.myjava.string;

public class MyStringEquals {
    public static void main(String a[]){
        String x = "JUNK";
        String y = "junk";
        /**
         * We cannot use '==' operator to compare two strings.
         * We have to use equals() method.
         */
        if(x.equals(y)){
            System.out.println("Both strings are equal.");
        } else {
            System.out.println("Both strings are not equal.");
        }
        /**
         * We can ignore case with equalsIgnoreCase() method
         */
        if(x.equalsIgnoreCase(y)){
            System.out.println("Both strings are equal.");
        } else {
            System.out.println("Both strings are not equal.");
        }
    }
}

Example Output

Both strings are not equal.
Both strings are equal.

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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]gmail.com.

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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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