i'm having issues opening new jframe window on click. think i'm doing right, i'm not sure. in action listener (in first class listed below)
testing2 test = new testing2(); testing2.setvisible(true); but testing2.setvisible(true) says "cannot make static reference non-static method setvisible(boolean) type jcomponent" appreciated.
import java.awt.*; import java.awt.event.*; import javax.swing.*; /************************************************************* * textpanel class (with main method) *************************************************************/ class testing2 extends jpanel { public testing2() { jbutton btntesting = new jbutton("testing 2"); add(btntesting); } // override paintcomponent method // main demo of example: public void paintcomponent(graphics g) { super.paintcomponent(g); font f = new font("sansserif", font.bold, 14); font fi = new font("sansserif", font.bold + font.italic, 14); fontmetrics fm = g.getfontmetrics(f); fontmetrics fim = g.getfontmetrics(fi); int cx = 75; int cy = 100; g.setfont(f); g.drawstring("hello, ", cx, cy); cx += fm.stringwidth("hello, "); g.setfont(fi); g.drawstring("world!", cx, cy); } //paintcomponent //============================================= ///////////// main //////////////////////////// public static void main(string[] args) { jframe f = new myframe("my hello world frame"); f.show(); } //main } //class textpanel /************************************************************* myframe class *************************************************************/ class myframe extends jframe { public myframe(string s) { // frame parameters settitle(s); setsize(300,200); // default size 0,0 setlocation(10,200); // default 0,0 (top left corner) // window listeners addwindowlistener(new windowadapter() { public void windowclosing(windowevent e) { system.exit(0); } //windowclosing }); //addwindowlister // add panels container contentpane = getcontentpane(); contentpane.add(new testing()); } //constructor myframe } //class myframe import java.awt.*; import java.awt.event.*; import javax.swing.*; /************************************************************* * textpanel class (with main method) *************************************************************/ class testing extends jpanel { public testing() { jbutton btntesting = new jbutton("testing 2"); btntesting.addactionlistener(new actionlistener() { public void actionperformed(actionevent e) { } }); add(btntesting); } // override paintcomponent method // main demo of example: public void paintcomponent(graphics g) { super.paintcomponent(g); font f = new font("sansserif", font.bold, 14); font fi = new font("sansserif", font.bold + font.italic, 14); fontmetrics fm = g.getfontmetrics(f); fontmetrics fim = g.getfontmetrics(fi); int cx = 75; int cy = 100; g.setfont(f); g.drawstring("hello, ", cx, cy); cx += fm.stringwidth("hello, "); g.setfont(fi); g.drawstring("world!", cx, cy); } //paintcomponent //============================================= ///////////// main //////////////////////////// public static void main(string[] args) { jframe f = new myframe("my hello world frame"); f.show(); } //main } //class textpanel /************************************************************* myframe class *************************************************************/ class myframe extends jframe { public myframe(string s) { // frame parameters settitle(s); setsize(300,200); // default size 0,0 setlocation(10,200); // default 0,0 (top left corner) system.err.println("here"); testing2 test = new testing2(); test.setvisible(true); // window listeners addwindowlistener(new windowadapter() { public void windowclosing(windowevent e) { system.exit(0); } //windowclosing }); //addwindowlister // add panels container contentpane = getcontentpane(); contentpane.add(new testing()); } //constructor myframe } //class myframe
use test, not testing2
test.setvisible(true); //was testing2.setvisible(true); 
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