In this tutorial, we will discuss the concept of Java code to display patterns using do while loop.
In Java, we can use for loop, while loop, do-while loop to display various number, star, alphabet and binary number patterns
In this topic, we demonstrate how to display print some number and star patterns using the nested do-while loop in Java language.
Program 1
class DoWhilepattern1{
public static void main(String args[]){
int i=0;
do{
int j=1;
while(j<=6)
{
System.out.print(j);
j++;
}
System.out.println();
i++;
}
while(i<=6);
}
} When the above code is compiled and executed, it produces the following results
123456 123456 123456 123456 123456 123456
Program 2
class NestedDoWhile1{
public static void main(String args[]){
int row=1,column=1;
int x;
do{
x=6;
do{
System.out.print("");
x--;
}while(x>=row);
column=1;
do{
System.out.print(column+" ");
column++;
}while(column<=row);
System.out.println(" ");
row++;
}while (row<=6);
}
}
When the above code is compiled and executed, it produces the following results
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 6
Program 3
class DoWhilepattern1{
public static void main(String args[]){
int i=0;
do{
int j=1;
while(j<=8)
{
System.out.print("*");
j++;
}
System.out.println();
i++;
}
while(i<=6);
}
} When the above code is compiled and executed, it produces the following results
******** ******** ******** ******** ******** ******** ********
Program4
class NestedDoWhile{
public static void main(String args[]){
int row=1,column=1;
int x;
do{
x=4;
do{
System.out.print("");
x--;
}while(x>=row);
column=1;
do{
System.out.print("*"+" ");
column++;
}while(column<=row);
System.out.println(" ");
row++;
}while (row<=5);
}
}
When the above code is compiled and executed, it produces the following results
* ** *** **** *****
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