Java Fundamentals part-4
Statements in Java:
There are 3 categories of statements
in Java:
1) Selection Statements:
i)
if Statement
ii)
if else Statement
iii)
if else if ….
else Statement
iv)
Nested if
Statement
v)
switch Statement
2) Iteration Statements(Loops):
i)
while loop
ii)
do while loop
iii)
for loop
iv)
Enhanced for loop
v)
Nested loops
3)
Jump Statements:
i)
break Statement
ii)
break LABEL
Statement
iii)
continue
Statement
iv)
continue LABEL
Statement
v)
return Statement
Program to demonstrate if Statement:
class Demo
{
public static
void main(String args[])
{
int a=10;
if(a>0)
System.out.println(“Positive Number”);
}
}
Program to demonstrate if else Statement:
class Demo
{
public static
void main(String args[])
{
int a=10;
if(a>0)
System.out.println(“Positive Number”);
else
System.out.println(“Negative Number”);
}
}
Program to demonstrate if else if … else Statement:
class Demo
{
public static
void main(String args[])
{
int a=10;
if(a>0)
System.out.println(“Positive Number”);
else if(a<0)
System.out.println(“Negative Number”);
else
System.out.println(“Zero”);
}
}
Program to demonstrate Nested if Statement:
class Demo
{
public static
void main(String args[])
{
int a=10;
if(a>0)
{
if(a%2==0)
{
System.out.println(“Even
Number”);
}
else
{
System.out.println(“Odd Number”);
}
}
else
{
if(a<0)
{
System.out.println(“Negative Number”);
}
else
{
System.out.println(“Zero”);
}
}
}
}
Program to demonstrate switch Statement:
class Demo
{
public static
void main(String args[])
{
int a=10;
switch(a)
{
case 1: System.out.println(“One”);
break;
case 2: System.out.println(“Two”);
break;
default: System.out.println(“Invalid”);
}
}
}
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