Zeek_14_StringManipulationMethods.java

 


/* -Different methods to manipulate strings -Strings are immutable(once defined, the defined one cannot be changed) */
package com.company;

public class Zeek_14_StringManipulationMethods {
    public static void main(String[] args) {
        
        
        String name"ZeeshanKhan";
        System.out.println("The name of string is: "+ name);
//Index of Z,e,e,s,h.... are 0,1,2,3,4,.... respectively (i.e index of Z is 0 and so on)
        
        
        //To Know length of string use .length
        int valuename.length();
        System.out.println(value);
        
        
    //To make string into lower or upper case use .toLowerCase() and .toUpperCase()
        System.out.println(name.toLowerCase());
        System.out.println(name.toUpperCase());
        
        
        //To remove white spaces use .trim()
        String nonTrimmed="  Zeeshan   ";
        System.out.println(nonTrimmed);
        System.out.println(nonTrimmed.trim());
        
        
        //To replace some old part with something new use .replace
 String rnamename.replace("e""i"); //Here e in name is replaced by i see console
  System.out.println(rname);
        
        
        //To take a part of string(i.e- substring) use .substring
 String subnamename.substring(3) ;//Will take string from 3rd index and print till the end
        System.out.println(subname);
        
        String subname1name.substring(28);//Will take string from 3rd index
 and print till index 7 (8 is excluded)
        System.out.println(subname1);
    
        
        //To find what character is at particular index use .charAt
        char sname.charAt(7);//Character at 7th position will be print on console
        System.out.println(s);
        
        
        //To find the index of a word or alphabet use .indexOf()
  int positionname.indexOf("a");// Index of a when it occurs first time(5th index)
        System.out.println(position);
        
 int last_positionname.lastIndexOf("a");// Index of a when it occurs last time(9th index)
        System.out.println(last_position);
    
    
    
    
    }
}

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