Category Archives: Java

Transpose of a 2D Matrix using list of list in java – program with explanation

• Raj
• 19th Mar 2014
• 0
• 22564

package com.kb.transpose; import java.util.*; public class TransposeWithListOfList {     public static void main(String[] args) {                 //create 2d array to hold matrix kind of data                 Object[][] data = {             { "r1col1", "r1col2", "r1col3", […]

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Best way to compare 2 strings

• Raj
• 17th Mar 2014
• 0
• 11830

Since equals is a built in method in java , we need to make sure that it should be called with object not with null. so in case if we call with null then we will endup with Null pointer exception. Ex : assume i need to check whether string a is equal to “hai” […]

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