Java Basics
Simple Methods And Basic Data Types - Con't
In this applet you can see how to use variables of type String (for text strings) and type int (for integer numbers, without fractional part). To use numbers for text output, you can simply add the number to the string with a + sign. If you have only a number variable to put out with drawString, you can put empty "" before your number, in order to convert them to a string.
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//Sourcecode
import java.awt.*;
import java.applet.*;
//Introduces variable output
public class Project3 extends Applet
{
//We need a global graphics object if
//we use functions using graphics:
public Graphics g;
//This is our method. It's only parameter is
//the y-coordinate of the text string.
public void Hallo(int y)
{
//str is a variable of type String
String str="Hallo Java!";
//our x-coordinate is of type integer
int x=50;
g.setColor(Color.black);
g.drawString(str+" The y-coodinate is: "+y, x, y);
}
public void paint (Graphics gr)
{
g=gr;
//We call our method several times
//with different parameters
Hallo(50);
Hallo(100);
Hallo(150);
Hallo(200);
Hallo(250);
}
}
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