3.2 Basic data types

Example 3.1

Class datademo01{

public static void Main (String[]args) {

int num=99999999999999999999999;//define shaping variable, error, out of length range

}

}

Example 3.2

Class datademo02{

public static void Main (String[]args) {

int Max=lnteger. Max_value;

SYSTEM.OUT.PRINTLN ("Maximum value of shaping:" +max);

SYSTEM.OUT.PRINTLN ("Shaping maximum + 1:" + (max+1));

SYSTEM.OUT.PRINTLN ("Shaping maximum + 2:" + (max+2));

}

}

Program Run Result:

Maximum number of shaping: 2147483647

Shaping Maximum Value +1:-2147483648

Shaping Maximum Value +2:-2147483647

Example 3.3

Class datademo03{

public static void Main (String[]args) {

int Max=lnteger. Max_value;

SYSTEM.OUT.PRINTLN ("Maximum value of shaping:" +max);

SYSTEM.OUT.PRINTLN ("Shaping maximum + 1:" + (max+1));

SYSTEM.OUT.PRINTLN ("Shaping maximum + 2:" + (max+2l));

SYSTEM.OUT.PRINTLN ("Shaping maximum + 2:" + ((long) max+2);

}

}

Program Run Result:

Maximum number of shaping: 2147483647

Shaping Maximum Value +1:-2147483648

Shaping Maximum Value +2:2147483649

Shaping Maximum Value +2:2147483649

Example 3.4

Class datademo04{

public static void Main (String[]args) {

Char ch1= ' a ';

Char ch2=97;

System.out.println ("ch1=" +ch1);

System.out.println ("ch2=" +CH2);

}

}

Program Run Result:

Ch1=a

Ch2=a

Example 3.5

Class datademo05{

public static void Main (String[]args) {

Char ch1= ' \ ';

char ch2= ' \ \ ';

System.out.println ("ch1=" +ch1);

System.out.println ("ch2=" +CH2);

System.out.println ("\" Hello world\ "");

}

}

Program Run Result:

Ch1= "

Ch2=\

"Hello World"

Example 3.6

Class datademo06{

public static void Main (String[]args) {

float num=3.0f;

System.out.println ("Two decimals multiplied:" +num*num);

}

}

Program Run Result:

Multiply two decimals: 9.0

Example 3.7

Class datademo07{

public static void Main (String[]args) {

Boolean flag=true;

System.out.println ("flag=" +flag);

}

}

Program Run Result:

Flag=true

3.2 Basic data types