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

Other String Function Examples

Knowledge Centre
wait Vs sleep methods
sleep(): It is a static method on Thread class. It makes the current thread into the "Not Runnable" state for specified amount of time. During this time, the thread keeps the lock (monitors) it has acquired.

wait(): It is a method on Object class. It makes the current thread into the "Not Runnable" state. Wait is called on a object, not a thread. Before calling wait() method, the object should be synchronized, means the object should be inside synchronized block. The call to wait() releases the acquired lock.
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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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