Hi friend,

import java.io.*;

public class PrintExamp{
public static void main(String[] args) throws IOException{
BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter any char!");
String str = buff.readLine();
int i=1;
int j;
while(i<=4){
for(j=1;j<=i;j++)
System.out.print(str);
i=i+1;
System.out.println();
}
}
}


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