Archive for the ‘Java Source Code’ Category
Objectives:
- How to use switch case in Java?
- How to use switch case with string in Java?
- How to pass string literals in switch case in Java?
Source Code:
public class SwitchWithStringExample
{
public static void main(String[] args)
{
String str = "two";
switch(str)
{
case "one":
System.out.println("one");
break;
case "two":
System.out.println("two");
break;
case "three":
System.out.println("three");
break;
default:
System.out.println("no match");
} // switch close
} // main close
} // class close
Steps to run above Java code:
Consider that we have saved code at C drive (c:\>) and the file is saved as SwitchWithStringExample.java
- Compilation : c:\> javac SwitchWithStringExample.java
- Interpretation : c:\> java SwitchWithStringExample
Output:
two
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Using For Each in Java
Posted on: April 2, 2020
Objective:
- How to use For Each in Java?
- How to use advance for in Java?
- How to use advance for loop in Java Programming Language?
- Types of For loop in Java
Source Code:
class ForEachExample
{
public static void main(String args[])
{
//declaring an array
int a[]={1,2,3,4,5,6};
// Old way
System.out.println("Old way");
for(int i=0; i<a.length;i++)
{
System.out.println(a[i]);
}
//New way: for-each loop
System.out.println("For each");
for(int i:a)
{
System.out.println(i);
}
}
}
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Pattern 3 :
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
Java Code for above pattern :
import java.util.Scanner;
public class Pattern3
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
//Taking rows value from the user
System.out.println("How many rows you want in this pattern?");
int rows = sc.nextInt();
System.out.println("Here is your pattern....!!!");
//Printing upper half of the pattern
for (int i = 1; i <= rows; i++)
{
for (int j = 1; j <= i; j++)
{
System.out.print(j+" ");
}
System.out.println();
}
//Printing lower half of the pattern
for (int i = rows-1; i >= 1; i--)
{
for (int j = 1; j <= i; j++)
{
System.out.print(j+" ");
}
System.out.println();
}
//Closing the resources
sc.close();
}
}
Output :
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
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Pattern 2 :
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
Java Program for the above pattern:
import java.util.Scanner;
public class MainClass
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
//Taking rows value from the user
System.out.println("How many rows you want in this pattern?");
int rows = sc.nextInt();
System.out.println("Here is your pattern....!!!");
for (int i = 1; i <= rows; i++)
{
for (int j = 1; j <= i; j++)
{
System.out.print(i+" ");
}
System.out.println();
}
//Close the resources
sc.close();
}
}
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Pattern Programs In Java – Pattern 1
Posted on: May 21, 2018
Q. Write a Java program to print given pattern.
Pattern 1 :
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4 5 6
1 2 3 4 5 6 7
Java Program:
import java.util.Scanner;
public class MainClass
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
//Taking rows value from the user
System.out.println("How many rows you want in this pattern?");
int rows = sc.nextInt();
System.out.println("Here is your pattern....!!!");
for (int i = 1; i <= rows; i++)
{
for (int j = 1; j <= i; j++)
{
System.out.print(j+" ");
}
System.out.println();
}
//Close the resources
sc.close();
}
}
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