JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to get line count from a string?


Description:

This example shows how to get line count from a string. Assuming that we have read the file and keeping the content in string. We are using String.split() method with the use of regular expression [\n|\r]. It will split the string based on the new line char and carriage return char. After the split, we will get string array, and returning length of the array.


Code:
package com.java2novice.string;

public class MyStringLineCounter {

	public static int getLineCount(String text){
		
		return text.split("[\n|\r]").length;
	}
	
	public static void main(String a[]){
	
		String str = "line1\nline2\nline3\rline4";
		System.out.println(str);
		int count = getLineCount(str);
		System.out.println("line count: "+count);
	}
}

Output:
line1
line2
line3
line4
line count: 4

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Knowledge Centre
Difference between while and do-while
The while statement verifies the condition before entering into the loop to see whether the next loop iteration should occur or not. The do-while statement executes the first iteration without checking the condition, it verifies the condition after finishing each iteration. The do-while statement will always execute the body of a loop at least once.
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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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