learning java

[Jacky Luk]

import java.awt.Graphics;


public class test1 extends java.applet.Applet {
//@Override
private String str;
private String str2;
public test1()
{
str = "come on";
str2 = " my friend";
}
public void init()
{
str.concat(str2);
}

public void paint(Graphics g) {

g.drawString("Hello from java!", 60, 30);
g.drawString(str, 100, 100);
}
}

How come str should be "come on my friend" instead of just "come on"? but
the applet just displayed "come on" without "my friend", so what happened?
Thanks
Jack

 

[Andrew Thompson]

Jacky Luk wrote:
.....

public void init()
{
str.concat(str2);

This is 'throwing away the result', try instead..
str = str.concat(str2);
....

Andrew T.

 

[Jacky Luk]

perfect fit! thanks
Jack

Jacky Luk wrote:
....

This is 'throwing away the result', try instead..
str = str.concat(str2);
...

Andrew T.