Changing the Java version Netbeans runs on

I had to install Oracle JDK in my Crunchbang when I faced this. Found no GUI way for this Googled it. A Stackoverflow page shows this. [http://stackoverflow.com/questions/6950960/how-to-set-the-jdk-netbeans-runs-on]
The file where this is defined is located in

/usr/local/netbeans-{version}/etc/netbeans.conf

There locate the line that starts with

netbeans_jdkhome=

And make it

netbeans_jdkhome="{where you've placed your java installation i.e. [/usr/lib/jvm/jdk1.8.0]}"

Fixing Netbeans font problem in Linux

Netbeans shows really awful fonts when you run it on Linux based systems. The reason behind is not actually Linux itself. It's the default arguments used to invoke the Java stuff that Netbeans uses. It, by default, never invokes Anti Aliasing. Thus for, the ugly fonts. Time to fix this. Source [ https://thomashunter.name/blog/enabling-anti-aliasing-in-the-netbeans-editor/ ]

ATTENTION: The following method will always start Netbeans with Anti aliasing on. If you want otherwise, you should try using the extra arguments with the command you use to invoke Netbeans.

1. First locate 'netbeans.conf'. I did that using the command

locate netbeans.conf

But, it usually is found in the directory

/usr/local/netbeans-[version]/etc/netbeans.conf

2. Open the file and look for the line

netbeans_default_options=

3. Between the quotes, you'll see some Java related arguments. What you have to do is, make the line look like this

netbeans_default_options="-J-client -J-Xss2m -J-Xms32m -J-XX:PermSize=32m -J-XX:MaxPermSize=200m
-J-Dapple.laf.useScreenMenuBar=true -J-Dapple.awt.graphics.UseQuartz=true
-J-Dsun.java2d.noddraw=true -J-Dswing.aatext=true -J-Dawt.useSystemAAFontSettings=on"

11821 - High-Precision Number

import java.util.Scanner;
import java.math.BigDecimal;

public class Main {
  public static void main(String[] args) {
    
    Scanner input = new Scanner(System.in);
    int n;
    BigDecimal val;
    n = input.nextInt();
    
    while ( n-- > 0 ) {
      BigDecimal sum = new BigDecimal("0");
      while ( true ) {
        val = input.nextBigDecimal();
        if ( val.equals(BigDecimal.ZERO) ) break;
        
        sum = sum.add(val);
        
      }
      
      int i = new Integer(0);
      
      char out[] = sum.toString().toCharArray();
      
      int len;
      
      for (len=out.length-1 ; len>0 && out[len]=='0' ; len--);
      if (len>0 && out[len]=='.') len--;
      for (i=0 ; i<=len ; i++) {
        System.out.print(out[i]);
      }
      System.out.println();
      
    }
    
  }
}

[UVa] 495 - Fibonacci Freeze

import java.util.Scanner;
import java.math.BigInteger;
/**
 *
 * @author Tafhim
 */
public class Main {

    
    public static void main(String[] args) {
        
        BigInteger[] fibs = new BigInteger[5004];
        fibs[0] = BigInteger.ZERO;
        fibs[1] = BigInteger.ONE;
        for (int i=2 ; i<=5000 ; i++)
        {
            fibs[i] = fibs[i-1].add(fibs[i-2]);
        }
        Scanner input = new Scanner(System.in);

        int q;

        while (input.hasNext())
        {
            q = input.nextInt();
            System.out.printf("The Fibonacci number for %d is %d\n",q,fibs[q]);
            
        }
    }
}